{"id":2520,"date":"2016-10-18T20:30:35","date_gmt":"2016-10-18T20:30:35","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=2520"},"modified":"2024-09-02T14:51:37","modified_gmt":"2024-09-02T14:51:37","slug":"conceitos-de-movimento-e-repouso-velocidade-media-velocidade-relativa-e-composicao-de-movimentos","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/raciocinio-logico\/conceitos-de-movimento-e-repouso-velocidade-media-velocidade-relativa-e-composicao-de-movimentos\/","title":{"rendered":"Conceitos de Movimento e Repouso, Velocidade M\u00e9dia, Velocidade Relativa e Composi\u00e7\u00e3o de Movimentos"},"content":{"rendered":"

Conceitos de Movimento e Repouso, Velocidade M\u00e9dia, Velocidade Relativa e Composi\u00e7\u00e3o de Movimentos<\/b><\/span><\/span><\/span><\/p>\n

Formul\u00e1rio<\/b><\/span><\/span><\/span><\/p>\n

\"\" Repouso e Movimento<\/b><\/span><\/span><\/span><\/p>\n

Defini\u00e7\u00e3o de repouso e de movimento \"\"<\/b><\/span><\/span><\/span> <\/b>Um <\/b><\/span><\/span><\/span>corpo <\/b><\/span><\/span><\/span>est\u00e1 em<\/b><\/span><\/span><\/span> movimento <\/b><\/span><\/span><\/span>em <\/b><\/span><\/span><\/span>rela\u00e7\u00e3o a outro corpo quando a <\/b><\/span><\/span><\/span>dist\u00e2ncia entre eles variar no decorrer do tempo<\/b><\/span><\/span><\/span>.<\/b><\/span><\/span><\/span> <\/b><\/p>\n

Caso contr\u00e1rio estar\u00e1 em repouso.<\/b><\/span><\/span><\/span><\/p>\n

\"\" Velocidade (escalar) M\u00e9dia<\/b><\/span><\/span><\/span><\/p>\n

Considere um <\/b><\/span><\/span><\/span>ponto material percorrendo certa trajet\u00f3ria, <\/b><\/span><\/span><\/span>passando no <\/b><\/span><\/span><\/span>instante t<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sub><\/span>\u00a0pela posi\u00e7\u00e3o S<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sub><\/span>\u00a0<\/b><\/span><\/span><\/span>e, <\/b><\/span><\/span><\/span>num instante posterior t. pela posi\u00e7\u00e3o S.<\/b><\/span><\/span><\/span>\"\"<\/p>\n

O <\/b><\/span><\/span><\/span>deslocamento escalar (\u0394S) \u00e9 dado por\u00a0 \u0394S = S \u2013 S<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sub><\/span>,<\/b><\/span><\/span><\/span> o <\/b><\/span><\/span><\/span>intervalo de tempo (\u0394t), por \u0394S = t \u2013 t<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sub><\/span>.\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span>\"\"<\/p>\n

A velocidade escalar m\u00e9dia\u00a0(V<\/b><\/span><\/span><\/span>m<\/b><\/span><\/span><\/sub><\/span>),<\/b><\/span><\/span><\/span>\u00a0por defini\u00e7\u00e3o \u00e9 a <\/b><\/span><\/span><\/span>raz\u00e3o entre o deslocamento (\u0394S)\u00a0 e o intervalo de tempo (\u0394t), ou seja:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

A\u00a0<\/b><\/span><\/span><\/span>velocidade instant\u00e2nea (V)\u00a0<\/b><\/span><\/span><\/span>seria a <\/b><\/span><\/span><\/span>indica\u00e7\u00e3o do veloc\u00edmetro<\/b><\/span><\/span><\/span> do carro em <\/b><\/span><\/span><\/span>cada instante.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\u00a0 <\/span>Ultrapassagem \u2013 velocidade relativa<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"\u00a0<\/span>Se um <\/b><\/span><\/span><\/span>m\u00f3vel <\/b><\/span><\/span><\/span>de <\/b><\/span><\/span><\/span>tamanho n\u00e3o desprez\u00edvel <\/b><\/span><\/span><\/span>com <\/b><\/span><\/span><\/span>velocidade V<\/b><\/span><\/span><\/span>1<\/b><\/span><\/span><\/sub><\/span>\u00a0<\/b><\/span><\/span><\/span>ultrapassar outro <\/b><\/span><\/span><\/span>tamb\u00e9m de dimens\u00e3o n\u00e3o desprez\u00edvel com velocidade V<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sub><\/span>, <\/b><\/span><\/span><\/span>deve-se <\/b><\/span><\/span><\/span>proceder da seguinte maneira:<\/b><\/span><\/span><\/span><\/p>\n

\"\" \u00a0<\/span>Mesmo sentido<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Voc\u00ea deve <\/b><\/span><\/span><\/span>parar um deles, <\/b><\/span><\/span><\/span>como <\/b><\/span><\/span><\/span>por exemplo, o caminh\u00e3o <\/b><\/span><\/span><\/span>(como se fosse uma ponte ou t\u00fanel) e <\/b><\/span><\/span><\/span>fazer o \u00f4nibus ultrapass\u00e1-lo utilizando velocidade relativa <\/b><\/span><\/span><\/span>que no <\/b><\/span><\/span><\/span>caso \u00e9 V<\/b><\/span><\/span><\/span>R<\/b><\/span><\/span><\/sub><\/span> = V<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sub><\/span>\u00a0\u2013 V<\/b><\/span><\/span><\/span>c<\/b><\/span><\/span><\/sub><\/span>, pois est\u00e3o <\/b><\/span><\/span><\/span>no <\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

mesmo sentido \"\" <\/b><\/span><\/span><\/span>V<\/b><\/span><\/span><\/span>R <\/b><\/span><\/span><\/sub><\/span>= \u0394S\/\u0394t\u00a0 \"\"\u00a0\u00a0<\/b><\/span><\/span><\/span>(V<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sub><\/span>\u00a0\u2013 V<\/b><\/span><\/span><\/span>c<\/b><\/span><\/span><\/sub><\/span>) = (comprimento do \u00f4nibus + comprimento do caminh\u00e3o)\/(intervalo de tempo de dura\u00e7\u00e3o da ultrapassagem).<\/b><\/span><\/span><\/span><\/p>\n

\"\" \u00a0<\/span>Sentidos contr\u00e1rios<\/b><\/span><\/span><\/span><\/p>\n

Proceder da <\/b><\/span><\/span><\/span>mesma maneira parando um deles, <\/b><\/span><\/span><\/span>como por exemplo, o <\/b><\/span><\/span><\/span>caminh\u00e3o e fazer o \u00f4nibus ultrapass\u00e1-lo utilizando velocidade relativa que no caso \u00e9 V<\/b><\/span><\/span><\/span>R <\/b><\/span><\/span><\/sub><\/span>= V<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sub><\/span>\u00a0+ V<\/b><\/span><\/span><\/span>c<\/b><\/span><\/span><\/sub><\/span>, <\/b><\/span><\/span><\/span>pois est\u00e3o\u00a0em <\/b><\/span><\/span><\/span>sentidos <\/b><\/span><\/span><\/span><\/p>\n

\"\"\u00a0\u00a0<\/span><\/p>\n

contr\u00e1rios \"\" V<\/b><\/span><\/span><\/span>R<\/b><\/span><\/span><\/sub><\/span> = \u0394S\/\u0394t\u00a0 \"\"<\/b><\/span><\/span><\/span>\u00a0\u00a0<\/b><\/span><\/span><\/span>(V<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sub><\/span>\u00a0+ V<\/b><\/span><\/span><\/span>c<\/b><\/span><\/span><\/sub><\/span>) = (comprimento do \u00f4nibus + comprimento do caminh\u00e3o)\/(intervalo de tempo de dura\u00e7\u00e3o da ultrapassagem.<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

\"\" No\u00e7\u00e3o de Composi\u00e7\u00e3o de Movimentos<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Voc\u00ea est\u00e1 olhando<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>de cima a carroceria de um caminh\u00e3o que est\u00e1 em repouso.<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span>Sobre<\/b><\/span><\/span><\/span> a carroceria <\/b><\/span><\/span><\/span>voc\u00ea est\u00e1 vendo<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>uma bola que est\u00e1 se movendo com velocidade\"\", em rela\u00e7\u00e3o \u00e0 mesma (carroceria), na dire\u00e7\u00e3o e sentido indicados<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>na figura<\/b><\/span><\/span><\/span>. <\/b><\/span><\/span><\/span>Essa<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>velocidade<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>\u00e9 chamada de <\/b><\/span><\/span><\/span>velocidade\u00a0relativa.<\/b><\/span><\/span><\/span><\/p>\n

Em seguida, o <\/b><\/span><\/span><\/span>caminh\u00e3o<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>adquire movimento retil\u00edneo e uniforme de<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>dire\u00e7\u00e3o horizontal<\/b><\/span><\/span><\/span> e <\/b><\/span><\/span><\/span>sentido<\/b><\/span><\/span><\/span> <\/b>para<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>a direita, com velocidade\u00a0\"\"\u00a0em rela\u00e7\u00e3o \u00e0 Terra<\/b><\/span><\/span><\/span>. <\/b><\/span><\/span><\/span>Essa velocidade <\/b><\/span><\/span><\/span>\u00e9 chamada de <\/b><\/span><\/span><\/span>velocidade de<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>arrastamento.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Segundo o<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>princ\u00edpio da independ\u00eancia de movimentos (Galileu Galilei)<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>a bola apresentar\u00e1 dois movimentos parciais:<\/b><\/span><\/span><\/span><\/p>\n

O<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>primeiro<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>em rela\u00e7\u00e3o \u00e0 carroceria (\"\")<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>e o<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>segundo, provocado pelo deslocamento do caminh\u00e3o<\/b><\/span><\/span><\/span><\/p>\n

(\"\").<\/b><\/span><\/span><\/span><\/p>\n

A<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>velocidade da bola em rela\u00e7\u00e3o \u00e0 Terra<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>(vista por uma pessoa na Terra), que \u00e9 chamada de\u00a0velocidade resultante, ser\u00e1\u00a0\"\", tal que:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\u00a0<\/span><\/p>\n

Exerc\u00edcios de vestibulares com resolu\u00e7\u00f5es comentadas sobre<\/b><\/span><\/span><\/span><\/p>\n

Conceitos de Movimento e Repouso, Velocidade M\u00e9dia, Velocidade Relativa e Composi\u00e7\u00e3o de Movimentos<\/b><\/span><\/span><\/span><\/p>\n

01-(UFB)\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Uma <\/b><\/span><\/span><\/span>bicicleta est\u00e1 se deslocando horizontalmente <\/b><\/span><\/span><\/span>para o <\/b><\/span><\/span><\/span>leste com velocidade constante.<\/b><\/span><\/span><\/span> Pede-se:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

a)<\/b><\/span><\/span><\/span> <\/b>O <\/b><\/span><\/span><\/span>selim est\u00e1 em repouso ou em movimento <\/b><\/span><\/span><\/span>em rela\u00e7\u00e3o ao <\/b><\/span><\/span><\/span>pneu?<\/b><\/span><\/span><\/span><\/p>\n

b)<\/b><\/span><\/span><\/span> <\/b>Esboce a <\/b><\/span><\/span><\/span>trajet\u00f3ria de um ponto do pneu, <\/b><\/span><\/span><\/span>vista por um <\/b><\/span><\/span><\/span>observador fixo no solo.<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

02-(PUC-MG)\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Uma mulher, <\/b><\/span><\/span><\/span>caminhando na praia, <\/b><\/span><\/span><\/span>deseja <\/b><\/span><\/span><\/span>calcular sua velocidade. <\/b><\/span><\/span><\/span><\/p>\n

Para isso, <\/b><\/span><\/span><\/span>ela conta o n\u00famero de passadas<\/b><\/span><\/span><\/span> que d\u00e1 <\/b><\/span><\/span><\/span>em um minuto, contando uma unidade a cada vez que o p\u00e9 direito toca o solo<\/b><\/span><\/span><\/span>, e conclui que <\/b><\/span><\/span><\/span>s\u00e3o 50 passadas por minuto. <\/b><\/span><\/span><\/span>A seguir, <\/b><\/span><\/span><\/span>ela mede a dist\u00e2ncia entre duas posi\u00e7\u00f5es sucessivas do seu p\u00e9 direito e encontra o equivalente a seis p\u00e9s. <\/b><\/span><\/span><\/span>Sabendo que <\/b><\/span><\/span><\/span>tr\u00eas p\u00e9s correspondem a um metro, <\/b><\/span><\/span><\/span>sua <\/b><\/span><\/span><\/span>velocidade, suposta constante,<\/b><\/span><\/span><\/span> \u00e9:<\/b><\/span><\/span><\/span>\"\"<\/p>\n

\"\"<\/p>\n

03-(UDESC-SC)\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Dois caminh\u00f5es <\/b><\/span><\/span><\/span>deslocam-se com <\/b><\/span><\/span><\/span>velocidade uniforme,<\/b><\/span><\/span><\/span> em <\/b><\/span><\/span><\/span>sentidos contr\u00e1rios,<\/b><\/span><\/span><\/span> numa <\/b><\/span><\/span><\/span>rodovia<\/b><\/span><\/span><\/span> de <\/b><\/span><\/span><\/span>m\u00e3o dupla.<\/b><\/span><\/span><\/span>\"\"<\/p>\n

A <\/b><\/span><\/span><\/span>velocidade do primeiro caminh\u00e3o e a do segundo, em rela\u00e7\u00e3o \u00e0 rodovia, s\u00e3o iguais a 40 km\/h e 50 km\/h, respectivamente.<\/b><\/span><\/span><\/span> <\/b><\/p>\n

Um <\/b><\/span><\/span><\/span>caroneiro, no primeiro caminh\u00e3o, <\/b><\/span><\/span><\/span>verificou que o <\/b><\/span><\/span><\/span>segundo caminh\u00e3o levou apenas 1,0 s para passar por ele. <\/b><\/span><\/span><\/span><\/p>\n

O <\/b><\/span><\/span><\/span>comprimento do segundo caminh\u00e3o <\/b><\/span><\/span><\/span>e a <\/b><\/span><\/span><\/span>velocidade dele <\/b><\/span><\/span><\/span>em <\/b><\/span><\/span><\/span>rela\u00e7\u00e3o ao caroneiro mencionado <\/b><\/span><\/span><\/span>s\u00e3o, <\/b><\/span><\/span><\/span>respectivamente, iguais a:<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>25 m e 90 km\/h\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>2,8 m e 10 km\/h\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>4,0 m e 25 m\/s\u00a0 \u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>28 m e 10 m\/s\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span><\/span>14 m e 50 km\/h\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

04-(UFPE-PE)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>atleta caminha com uma velocidade de 150 passos por minuto<\/b><\/span><\/span><\/span>. Se ele <\/b><\/span><\/span><\/span>percorrer 7,20 km <\/b><\/span><\/span><\/span>em <\/b><\/span><\/span><\/span>uma hora,<\/b><\/span><\/span><\/span> com <\/b><\/span><\/span><\/span>passos <\/b><\/span><\/span><\/span>de <\/b><\/span><\/span><\/span>mesmo tamanho, qual o comprimento de cada passo?<\/b><\/span><\/span><\/span>
\n<\/b><\/span><\/span><\/span>a) <\/b><\/span><\/span><\/span>40,0 cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>60,0 cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>80,0 cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>100 cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span><\/span>120 cm<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

05-(FGV-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Comandada com <\/b><\/span><\/span><\/span>velocidade constante de 0,4 m\/s, a prociss\u00e3o iniciada<\/b><\/span><\/span><\/span> no ponto indicado <\/b><\/span><\/span><\/span>da Pra\u00e7a Santa Madalena segue com o Santo sobre o andor por toda a extens\u00e3o da Av. Vanderli Diagramatelli.<\/b><\/span><\/span><\/span><\/p>\n

Para garantir a <\/b><\/span><\/span><\/span>seguran\u00e7a dos devotos,<\/b><\/span><\/span><\/span> a companhia de tr\u00e2nsito <\/b><\/span><\/span><\/span>somente liberar\u00e1 o tr\u00e2nsito de uma via adjacente, assim que a \u00faltima pessoa que segue pela prociss\u00e3o atravesse completamente a via em quest\u00e3o.<\/b><\/span><\/span><\/span>\"\"<\/p>\n

Dados:<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>A <\/b><\/span><\/span><\/span>Av. Vanderli Diagramatelli <\/b><\/span><\/span><\/span>se estende por <\/b><\/span><\/span><\/span>mais de oito quarteir\u00f5es e<\/b><\/span><\/span><\/span>, devido \u00e0 <\/b><\/span><\/span><\/span>distribui\u00e7\u00e3o uniforme dos devotos sobre ela, o comprimento total da prociss\u00e3o \u00e9 sempre 240 m.<\/b><\/span><\/span><\/span><\/p>\n

Todos<\/b><\/span><\/span><\/span> os quarteir\u00f5es s\u00e3o <\/b><\/span><\/span><\/span>quadrados e t\u00eam \u00e1reas de 10 000 m<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sup><\/span>.<\/b><\/span><\/span><\/span><\/p>\n

A <\/b><\/span><\/span><\/span>largura de todas as ruas <\/b><\/span><\/span><\/span>que atravessam a <\/b><\/span><\/span><\/span>Av. Vanderli Diagramatelli \u00e9 de 10 m.<\/b><\/span><\/span><\/span><\/p>\n

Do momento em que a prociss\u00e3o teve seu in\u00edcio <\/b><\/span><\/span><\/span>at\u00e9 o <\/b><\/span><\/span><\/span>instante em que ser\u00e1 liberado o tr\u00e2nsito pela R. Geralda Boapessoa, decorrer\u00e1 um intervalo de tempo, em minutos, igual a:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\u00a0<\/span><\/p>\n

06-(FUVEST-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Dirigindo-se <\/b><\/span><\/span><\/span>a uma <\/b><\/span><\/span><\/span>cidade pr\u00f3xima, por uma auto-estrada plana<\/b><\/span><\/span><\/span>, um <\/b><\/span><\/span><\/span>motorista estima seu tempo de viagem, <\/b><\/span><\/span><\/span>considerando que <\/b><\/span><\/span><\/span>consiga manter uma velocidade m\u00e9dia de 90 km\/h. <\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Ao ser <\/b><\/span><\/span><\/span>surpreendido pela chuva<\/b><\/span><\/span><\/span>, decide <\/b><\/span><\/span><\/span>reduzir sua velocidade m\u00e9dia para 60 km\/h, permanecendo assim at\u00e9 a chuva parar, quinze minutos mais tarde, quando retoma sua velocidade m\u00e9dia inicial.<\/b><\/span><\/span><\/span><\/p>\n

Essa <\/b><\/span><\/span><\/span>redu\u00e7\u00e3o tempor\u00e1ria aumenta seu tempo de viagem, <\/b><\/span><\/span><\/span>com <\/b><\/span><\/span><\/span>rela\u00e7\u00e3o \u00e0 estimativa inicial, <\/b><\/span><\/span><\/span>em<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>5 minutos.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>7,5 minutos.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>10 minutos.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>15 minutos.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0<\/b><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span><\/span>30 minutos.<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

07-(FUVEST-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Diante de uma <\/b><\/span><\/span><\/span>agencia do INPS <\/b><\/span><\/span><\/span>h\u00e1 uma <\/b><\/span><\/span><\/span>fila de\u00a0 aproximadamente 100m de comprimento,<\/b><\/span><\/span><\/span> ao longo da qual <\/b><\/span><\/span><\/span>se distribuem de maneira uniforme 200 pessoas. <\/b><\/span><\/span><\/span>\"\"<\/p>\n

Aberta a porta, as pessoas <\/b><\/span><\/span><\/span>entram, durante 30s, com uma velocidade m\u00e9dia de 1m\/s.<\/b><\/span><\/span><\/span> <\/b><\/p>\n

Qual <\/b><\/span><\/span><\/span>o <\/b><\/span><\/span><\/span>n\u00famero de pessoas<\/b><\/span><\/span><\/span> que <\/b><\/span><\/span><\/span>entraram na agencia?<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>20 pessoas \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>40 pessoas \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>60 pessoas\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>80 <\/b><\/span><\/span><\/span>pessoas\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span><\/span>100 pessoas<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

08-(F\u00cdSICA E VESTIBULAR)<\/b><\/span><\/span><\/span><\/p>\n

Duas <\/b><\/span><\/span><\/span>esta\u00e7\u00f5es espaciais interplanet\u00e1rias distam<\/b><\/span><\/span><\/span> entre si de <\/b><\/span><\/span><\/span>288.000 km. <\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

No instante <\/b><\/span><\/span><\/span>em que uma <\/b><\/span><\/span><\/span>nave espacial em movimento retil\u00edneo uniforme com velocidade V <\/b><\/span><\/span><\/span>passa pela <\/b><\/span><\/span><\/span>primeira esta\u00e7\u00e3o, esta envia um sinal luminoso em dire\u00e7\u00e3o \u00e0 segunda esta\u00e7\u00e3o. <\/b><\/span><\/span><\/span><\/p>\n

Quando esse <\/b><\/span><\/span><\/span>sinal luminoso chega \u00e0 segunda esta\u00e7\u00e3o, esta aciona um cron\u00f4metro eletr\u00f4nico <\/b><\/span><\/span><\/span>que <\/b><\/span><\/span><\/span>s\u00f3 \u00e9 desligado quando a nave passa por ela, registrando exatamente 1h. <\/b><\/span><\/span><\/span><\/p>\n

Considerando a <\/b><\/span><\/span><\/span>velocidade da luz como 3.10<\/b><\/span><\/span><\/span>5<\/b><\/span><\/span><\/sup><\/span>km\/s, <\/b><\/span><\/span><\/span>a <\/b><\/span><\/span><\/span>velocidade da nave est\u00e1 mais pr\u00f3xima <\/b><\/span><\/span><\/span>de:\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span>09-(FUVEST-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>passageiro, <\/b><\/span><\/span><\/span>viajando de <\/b><\/span><\/span><\/span>metr\u00f4,<\/b><\/span><\/span><\/span> fez o <\/b><\/span><\/span><\/span>registro de tempo entre duas esta\u00e7\u00f5es <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>obteve os valores indicados na tabela.<\/b><\/span><\/span><\/span>\"\"<\/p>\n

Supondo <\/b><\/span><\/span><\/span>que a <\/b><\/span><\/span><\/span>velocidade m\u00e9dia entre duas esta\u00e7\u00f5es consecutivas seja sempre a mesma <\/b><\/span><\/span><\/span>e que o <\/b><\/span><\/span><\/span>trem pare o mesmo tempo em qualquer esta\u00e7\u00e3o da linha,<\/b><\/span><\/span><\/span> <\/b>de 15 km de extens\u00e3o,<\/b><\/span><\/span><\/span> \u00e9 <\/b><\/span><\/span><\/span>poss\u00edvel estimar <\/b><\/span><\/span><\/span>que um trem, <\/b><\/span><\/span><\/span>desde a partida da Esta\u00e7\u00e3o Bosque at\u00e9 a chegada \u00e0 Esta\u00e7\u00e3o Terminal, <\/b><\/span><\/span><\/span>leva <\/b><\/span><\/span><\/span>aproximadamente<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

10-(UNIFESP-SP)<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

A <\/b><\/span><\/span><\/span>foto, tirada da Terra, <\/b><\/span><\/span><\/span>mostra uma <\/b><\/span><\/span><\/span>seq\u00fc\u00eancia de 12 instant\u00e2neos do tr\u00e2nsito de V\u00eanus em frente ao Sol, <\/b><\/span><\/span><\/span>ocorrido no dia 8 de junho de 2004. <\/b><\/span><\/span><\/span><\/p>\n

O <\/b><\/span><\/span><\/span>intervalo entre esses instant\u00e2neos foi, aproximadamente, de 34 min.<\/b><\/span><\/span><\/span><\/p>\n

Qual a dist\u00e2ncia percorrida por V\u00eanus, em sua \u00f3rbita, durante todo o transcorrer desse fen\u00f4meno?<\/b><\/span><\/span><\/span><\/p>\n

Dados: <\/b><\/span><\/span><\/span>velocidade orbital m\u00e9dia de V\u00eanus: <\/b><\/span><\/span><\/span>35 km\/s; <\/b><\/span><\/span><\/span>dist\u00e2ncia de V\u00eanus \u00e0 Terra durante o fen\u00f4meno: <\/b><\/span><\/span><\/span>4,2.10<\/b><\/span><\/span><\/span>10<\/b><\/span><\/span><\/sup><\/span>\u00a0m; <\/b><\/span><\/span><\/span>dist\u00e2ncia m\u00e9dia do Sol \u00e0 Terra: <\/b><\/span><\/span><\/span>1,5.10<\/b><\/span><\/span><\/span>11<\/b><\/span><\/span><\/sup><\/span>\u00a0m.<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

11-(UFRJ-RJ)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Dois trens, <\/b><\/span><\/span><\/span>um de <\/b><\/span><\/span><\/span>carga<\/b><\/span><\/span><\/span> e outro de <\/b><\/span><\/span><\/span>passageiros,<\/b><\/span><\/span><\/span> movem-se nos <\/b><\/span><\/span><\/span>mesmos trilhos retil\u00edneos,<\/b><\/span><\/span><\/span> em <\/b><\/span><\/span><\/span>sentidos opostos, <\/b><\/span><\/span><\/span>um <\/b><\/span><\/span><\/span>aproximando-se do outro, ambos com movimentos uniformes. <\/b><\/span><\/span><\/span><\/p>\n

O <\/b><\/span><\/span><\/span>trem de carga, de 50 m de comprimento,<\/b><\/span><\/span><\/span> tem uma <\/b><\/span><\/span><\/span>velocidade de m\u00f3dulo igual a 10 m\/s<\/b><\/span><\/span><\/span> e o de <\/b><\/span><\/span><\/span>passageiros, uma velocidade de m\u00f3dulo igual a v. <\/b><\/span><\/span><\/span><\/p>\n

O <\/b><\/span><\/span><\/span>trem de carga deve entrar num desvio para que o de passageiros possa prosseguir viagem <\/b><\/span><\/span><\/span>nos <\/b><\/span><\/span><\/span>mesmos trilhos, como ilustra a figura.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

No <\/b><\/span><\/span><\/span>instante focalizado, <\/b><\/span><\/span><\/span>as <\/b><\/span><\/span><\/span>dist\u00e2ncias das dianteiras dos trens ao desvio valem 200 m e 400 m, respectivamente.<\/b><\/span><\/span><\/span><\/p>\n

Calcule<\/b><\/span><\/span><\/span> o <\/b><\/span><\/span><\/span>valor m\u00e1ximo de v para que n\u00e3o haja colis\u00e3o.<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

12-(UNICAMP-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>carro,<\/b><\/span><\/span><\/span> a uma <\/b><\/span><\/span><\/span>velocidade m\u00e9dia de 18 Km\/h, <\/b><\/span><\/span><\/span>est\u00e1 <\/b><\/span><\/span><\/span>percorrendo o trecho de rua. <\/b><\/span><\/span><\/span>Devido a um <\/b><\/span><\/span><\/span>problema mec\u00e2nico, pinga \u00f3leo do motor a raz\u00e3o de 6 gotas por minuto.<\/b><\/span><\/span><\/span> <\/b><\/p>\n

Qual<\/b><\/span><\/span><\/span> a <\/b><\/span><\/span><\/span>distancia entre os pingos de \u00f3leo <\/b><\/span><\/span><\/span>que o carro deixa <\/b><\/span><\/span><\/span>na rua?<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

13-(UEL-PR)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

O <\/b><\/span><\/span><\/span>cavalo anda nas pontas dos cascos. <\/b><\/span><\/span><\/span><\/p>\n

Nenhum animal se <\/b><\/span><\/span><\/span>parece tanto <\/b><\/span><\/span><\/span>com uma <\/b><\/span><\/span><\/span>estrela do corpo de bal\u00e9 <\/b><\/span><\/span><\/span>quanto um <\/b><\/span><\/span><\/span>puro sangue em perfeito equil\u00edbrio, <\/b><\/span><\/span><\/span>que a m\u00e3o de quem o monta parece <\/b><\/span><\/span><\/span>manter suspenso.<\/b><\/span><\/span><\/span> <\/b><\/p>\n

Degas pintou-o <\/b><\/span><\/span><\/span>e procurou <\/b><\/span><\/span><\/span>concentrar<\/b><\/span><\/span><\/span> todos os <\/b><\/span><\/span><\/span>aspectos e fun\u00e7\u00f5es do cavalo de corrida: treinamento, velocidade, apostas e fraudes, beleza, eleg\u00e2ncia suprema. <\/b><\/span><\/span><\/span><\/p>\n

Ele foi um dos <\/b><\/span><\/span><\/span>primeiros a estudar as verdadeiras figuras do nobre animal em movimento, <\/b><\/span><\/span><\/span>por meio dos <\/b><\/span><\/span><\/span>instant\u00e2neos do grande Muybridge. <\/b><\/span><\/span><\/span><\/p>\n

De resto, <\/b><\/span><\/span><\/span>amava e apreciava a fotografia, <\/b><\/span><\/span><\/span>em uma \u00e9poca em que os <\/b><\/span><\/span><\/span>artistas a desdenhavam ou n\u00e3o ousavam confessar que a utilizavam.<\/b><\/span><\/span><\/span><\/p>\n

(Adaptado de: VAL\u00c9RY, P. Degas Dan\u00e7a Desenho. S\u00e3o Paulo: Cosac & Naif, 2003, p. 77.)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Suponha<\/b><\/span><\/span><\/span> que a <\/b><\/span><\/span><\/span>sequ\u00eancia de imagens apresentada na figura acima\u00a0<\/b><\/span><\/span><\/span>foi obtida com o <\/b><\/span><\/span><\/span>aux\u00edlio de c\u00e2meras fotogr\u00e1ficas dispostas a cada 1,5 m ao longo da trajet\u00f3ria do cavalo.<\/b><\/span><\/span><\/span><\/p>\n

Sabendo<\/b><\/span><\/span><\/span> que a <\/b><\/span><\/span><\/span>frequ\u00eancia do movimento foi de 0,5 Hz,<\/b><\/span><\/span><\/span> a <\/b><\/span><\/span><\/span>velocidade m\u00e9dia<\/b><\/span><\/span><\/span> do cavalo \u00e9:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

14-(UNICAMP-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Brasileiro sofre! <\/b><\/span><\/span><\/span>Numa tarde de sexta-feira, a <\/b><\/span><\/span><\/span>fila \u00fanica de clientes de um banco tem comprimento de 50m.<\/b><\/span><\/span><\/span> <\/b>\"\"<\/p>\n

Em m\u00e9dia,<\/b><\/span><\/span><\/span> a <\/b><\/span><\/span><\/span>dist\u00e2ncia entre as pessoas na fila \u00e9 de 1m. <\/b><\/span><\/span><\/span><\/p>\n

Os <\/b><\/span><\/span><\/span>clientes s\u00e3o atendidos por tr\u00eas caixas. Cada caixa leva cerca de 3 min para atender um cliente. <\/b><\/span><\/span><\/span>Pergunta-se:<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>Qual a <\/b><\/span><\/span><\/span>velocidade m\u00e9dia dos clientes <\/b><\/span><\/span><\/span>ao longo da fila, <\/b><\/span><\/span><\/span>em m\/min?<\/b><\/span><\/span><\/span><\/p>\n

b) Quanto tempo <\/b><\/span><\/span><\/span>um cliente <\/b><\/span><\/span><\/span>gasta na fila?<\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>Se <\/b><\/span><\/span><\/span>um dos caixas se retirar por trinta minutos, <\/b><\/span><\/span><\/span>de quantos <\/b><\/span><\/span><\/span>metros a fila aumenta?<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

15-(FUVEST-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Em um <\/b><\/span><\/span><\/span>pr\u00e9dio de 20 andares <\/b><\/span><\/span><\/span>(al\u00e9m do t\u00e9rreo) o <\/b><\/span><\/span><\/span>elevador leva 36 s para ir do t\u00e9rreo ao 20\u00b0 andar. <\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Uma <\/b><\/span><\/span><\/span>pessoa no andar<\/b><\/span><\/span><\/span> <\/b>X chama o elevador, que est\u00e1 inicialmente no t\u00e9rreo, <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>39,6 s ap\u00f3s a chamada<\/b><\/span><\/span><\/span> a pessoa <\/b><\/span><\/span><\/span>atinge o andar t\u00e9rreo. <\/b><\/span><\/span><\/span><\/p>\n

Se <\/b><\/span><\/span><\/span>n\u00e3o houve paradas intermedi\u00e1rias, <\/b><\/span><\/span><\/span>e os <\/b><\/span><\/span><\/span>tempos de abertura e fechamento da porta do elevador <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>de entrada e sa\u00edda do passageiro s\u00e3o desprez\u00edveis,<\/b><\/span><\/span><\/span> podemos dizer que <\/b><\/span><\/span><\/span>o andar X \u00e9 o:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

16-(FATEC-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Isabela combinou de se encontrar com seu primo Mateo no ponto de \u00f4nibus. <\/b><\/span><\/span><\/span><\/p>\n

Ela <\/b><\/span><\/span><\/span>mora a 1 km do ponto, e ele a 2,5 km do mesmo ponto de \u00f4nibus, <\/b><\/span><\/span><\/span>conforme figura a seguir:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Mateo ligou para Isabela <\/b><\/span><\/span><\/span>e a <\/b><\/span><\/span><\/span>avisou que sairia de casa \u00e0s 12 h 40 min. <\/b><\/span><\/span><\/span><\/p>\n

Para chegar ao local marcado <\/b><\/span><\/span><\/span>no <\/b><\/span><\/span><\/span>mesmo hor\u00e1rio<\/b><\/span><\/span><\/span> que seu primo, <\/b><\/span><\/span><\/span>Isabela deve sair de sua casa aproximadamente \u00e0s<\/b><\/span><\/span><\/span><\/p>\n

(A) <\/b><\/span><\/span><\/span>13 h 00 min.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

(B) <\/b><\/span><\/span><\/span>13 h 05 min.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

(C) <\/b><\/span><\/span><\/span>13 h 10 min.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

(D) <\/b><\/span><\/span><\/span>13 h 15 min.\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

(E) <\/b><\/span><\/span><\/span>13 h 25 min.<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

17-(ENEM-MEC)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

O <\/b><\/span><\/span><\/span>tempo que um \u00f4nibus gasta para ir do ponto inicial ao ponto final de uma linha varia, durante o dia, <\/b><\/span><\/span><\/span>conforme as <\/b><\/span><\/span><\/span>condi\u00e7\u00f5es do tr\u00e2nsito, demorando mais <\/b><\/span><\/span><\/span>nos <\/b><\/span><\/span><\/span>hor\u00e1rios de maior movimento. <\/b><\/span><\/span><\/span><\/p>\n

A <\/b><\/span><\/span><\/span>empresa que opera essa linha forneceu, <\/b><\/span><\/span><\/span>no <\/b><\/span><\/span><\/span>gr\u00e1fico abaixo, <\/b><\/span><\/span><\/span>o <\/b><\/span><\/span><\/span>tempo m\u00e9dio de dura\u00e7\u00e3o <\/b><\/span><\/span><\/span>da viagem <\/b><\/span><\/span><\/span>conforme o hor\u00e1rio de sa\u00edda do ponto inicial, no per\u00edodo da manh\u00e3.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

De <\/b><\/span><\/span><\/span>acordo com as informa\u00e7\u00f5es do gr\u00e1fico, <\/b><\/span><\/span><\/span>um <\/b><\/span><\/span><\/span>passageiro<\/b><\/span><\/span><\/span> que <\/b><\/span><\/span><\/span>necessita chegar at\u00e9 \u00e0s 10h30min <\/b><\/span><\/span><\/span>ao <\/b><\/span><\/span><\/span>ponto final dessa linha, <\/b><\/span><\/span><\/span>deve <\/b><\/span><\/span><\/span>tomar o \u00f4nibus no ponto inicial,<\/b><\/span><\/span><\/span> no <\/b><\/span><\/span><\/span>m\u00e1ximo, <\/b><\/span><\/span><\/span>at\u00e9 as:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

18-(UNICAMP-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

A <\/b><\/span><\/span><\/span>figura abaixo <\/b><\/span><\/span><\/span>mostra o <\/b><\/span><\/span><\/span>esquema simplificado de um dispositivo colocado em uma rua para controle de velocidade de autom\u00f3veis (dispositivo popularmente chamado de \u201cradar\u201d.<\/b><\/span><\/span><\/span><\/p>\n

Os <\/b><\/span><\/span><\/span>sensores S(1) e S(2) e a c\u00e2mera est\u00e3o ligadas a um computador.\u00a0<\/b><\/span><\/span><\/span>\"\"<\/p>\n

Os <\/b><\/span><\/span><\/span>sensores enviam um sinal ao computador<\/b><\/span><\/span><\/span> sempre que s\u00e3o <\/b><\/span><\/span><\/span>pressionados pela roda de um ve\u00edculo. <\/b><\/span><\/span><\/span>Se a <\/b><\/span><\/span><\/span>velocidade do ve\u00edculo est\u00e1 acima da permitida, <\/b><\/span><\/span><\/span>o <\/b><\/span><\/span><\/span>computador envia um sinal <\/b><\/span><\/span><\/span>para que a <\/b><\/span><\/span><\/span>c\u00e2mera fotografe sua placa traseira no momento em que ela estiver sobre a linha tracejada. <\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Para um certo ve\u00edculo, os sinal dos sensores foram os seguintes:<\/b><\/span><\/span><\/span><\/p>\n

A <\/b><\/span><\/span><\/span>velocidade do ve\u00edculo em km\/h, <\/b><\/span><\/span><\/span>e a <\/b><\/span><\/span><\/span>dist\u00e2ncia entre os eixos do ve\u00edculo em m, <\/b><\/span><\/span><\/span>valem, <\/b><\/span><\/span><\/span>respectivamente:<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>144 e 5\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>72 e 5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>144 e 3\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>72 e 3\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span><\/span>144 e 2<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

19-(UERJ-RJ)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>piso plano <\/b><\/span><\/span><\/span>\u00e9 <\/b><\/span><\/span><\/span>revestido de hex\u00e1gonos regulares congruentes,<\/b><\/span><\/span><\/span> cujos <\/b><\/span><\/span><\/span>lados medem 10 cm.<\/b><\/span><\/span><\/span><\/p>\n

Na <\/b><\/span><\/span><\/span>ilustra\u00e7\u00e3o<\/b><\/span><\/span><\/span> de <\/b><\/span><\/span><\/span>parte desse piso, T, M e F s\u00e3o v\u00e9rtices comuns a tr\u00eas hex\u00e1gonos <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>representam <\/b><\/span><\/span><\/span>os <\/b><\/span><\/span><\/span>pontos nos quais se encontram, respectivamente, um torr\u00e3o de a\u00e7\u00facar, uma mosca e uma formiga.<\/b><\/span><\/span><\/span><\/p>\n

Ao <\/b><\/span><\/span><\/span>perceber o a\u00e7\u00facar, <\/b><\/span><\/span><\/span>os <\/b><\/span><\/span><\/span>dois insetos partem no mesmo instante, <\/b><\/span><\/span><\/span>com <\/b><\/span><\/span><\/span>velocidades constantes<\/b><\/span><\/span><\/span>, para <\/b><\/span><\/span><\/span>alcan\u00e7\u00e1-lo. <\/b><\/span><\/span><\/span>\"\"<\/p>\n

Admita que a mosca <\/b><\/span><\/span><\/span>leve 10 segundos para atingir o ponto T.<\/b><\/span><\/span><\/span> <\/b>Despreze <\/b><\/span><\/span><\/span>o <\/b><\/span><\/span><\/span>espa\u00e7amento <\/b><\/span><\/span><\/span>entre os <\/b><\/span><\/span><\/span>hex\u00e1gonos e as dimens\u00f5es dos animais.<\/b><\/span><\/span><\/span> A <\/b><\/span><\/span><\/span>menor velocidade, em cent\u00edmetros por segundo, necess\u00e1ria para que a formiga chegue ao ponto T no mesmo instante que a mosca, \u00e9 igual <\/b><\/span><\/span><\/span>a:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\u00a0<\/span><\/p>\n

20-(UFPE-PE)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>atleta caminha <\/b><\/span><\/span><\/span>com uma <\/b><\/span><\/span><\/span>velocidade de 150 passos por minuto.<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span>Se ele <\/b><\/span><\/span><\/span>percorrer 7,20\u00a0km em uma hora, <\/b><\/span><\/span><\/span>com <\/b><\/span><\/span><\/span>passos\u00a0de\u00a0mesmo tamanho,<\/b><\/span><\/span><\/span> qual o <\/b><\/span><\/span><\/span>comprimento de cada passo?<\/b><\/span><\/span><\/span>\"\"<\/p>\n

a)\u00a0<\/b><\/span><\/span><\/span>40,0\u00a0cm \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>60,0 cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>80,0 cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>100 <\/b><\/span><\/span><\/span>cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span><\/span>120 cm\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

21-(UFMG-MG)\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\u00c2ngela e T\u00e2nia iniciam, juntas, <\/b><\/span><\/span><\/span>um <\/b><\/span><\/span><\/span>passeio em torno de uma lagoa. <\/b><\/span><\/span><\/span>Neste gr\u00e1fico, est\u00e1 <\/b><\/span><\/span><\/span>registrada a dist\u00e2ncia que cada uma delas percorre, em fun\u00e7\u00e3o do tempo:<\/b><\/span><\/span><\/span><\/p>\n

Ap\u00f3s 30 minutos do in\u00edcio do percurso, T\u00e2nia avisa a \u00c2ngela, por telefone, que acaba de passar pela igreja.<\/b><\/span><\/span><\/span>\"\"<\/p>\n

Com base <\/b><\/span><\/span><\/span>nessas informa\u00e7\u00f5es, <\/b><\/span><\/span><\/span>s\u00e3o feitas <\/b><\/span><\/span><\/span>duas observa\u00e7\u00f5es:<\/b><\/span><\/span><\/span><\/p>\n

I. <\/b><\/span><\/span><\/span>\u00c2ngela <\/b><\/span><\/span><\/span>passa pela igreja 10 minutos ap\u00f3s <\/b><\/span><\/span><\/span>o <\/b><\/span><\/span><\/span>telefonema de T\u00e2nia.<\/b><\/span><\/span><\/span><\/p>\n

II. <\/b><\/span><\/span><\/span>Quando <\/b><\/span><\/span><\/span>\u00c2ngela passa pela igreja, T\u00e2nia <\/b><\/span><\/span><\/span>est\u00e1 <\/b><\/span><\/span><\/span>4 km \u00e0 sua frente.<\/b><\/span><\/span><\/span><\/p>\n

Considerando-se a <\/b><\/span><\/span><\/span>situa\u00e7\u00e3o descrita, \u00e9 CORRETO afirmar<\/b><\/span><\/span><\/span> que<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>apenas a observa\u00e7\u00e3o I est\u00e1 certa.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>apenas a observa\u00e7\u00e3o II est\u00e1 certa.<\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>ambas as observa\u00e7\u00f5es est\u00e3o certas.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>nenhuma das duas observa\u00e7\u00f5es est\u00e1 certa.<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

22- (FISICAEVESTIBULAR<\/b><\/span><\/span><\/span>)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

No <\/b><\/span><\/span><\/span>quintal de uma casa, <\/b><\/span><\/span><\/span>encontram-se <\/b><\/span><\/span><\/span>dois gatinhos dormindo juntos, \u00e0 noite. <\/b><\/span><\/span><\/span><\/p>\n

Um garoto <\/b><\/span><\/span><\/span>explode uma bombinha <\/b><\/span><\/span><\/span>e a <\/b><\/span><\/span><\/span>explos\u00e3o ocorre a 23,10 m do local onde se encontram dois gatinhos <\/b><\/span><\/span><\/span>que, <\/b><\/span><\/span><\/span>assustados com o clar\u00e3o, correm com a mesma velocidade de 15 m\/s, um diretamente para o local da explos\u00e3o<\/b><\/span><\/span><\/span> e o <\/b><\/span><\/span><\/span>outro no sentido oposto. <\/b><\/span><\/span><\/span>\"\"<\/p>\n

Sabendo que a <\/b><\/span><\/span><\/span>velocidade do som no ar vale 340 m\/s, <\/b><\/span><\/span><\/span>podemos <\/b><\/span><\/span><\/span>concluir que os gatinhos ouvir\u00e3o o estrondo correspondente <\/b><\/span><\/span><\/span>com uma <\/b><\/span><\/span><\/span>diferen\u00e7a de tempo que vale, <\/b><\/span><\/span><\/span>aproximadamente, <\/b><\/span><\/span><\/span>em segundos:<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>0,006\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>0,07\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>0,8\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>0,1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span><\/span>1,0<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

23-(FUVEST-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

Uma <\/b><\/span><\/span><\/span>pessoa caminha com passadas iguais de 80 <\/b><\/span><\/span><\/span>cm com <\/b><\/span><\/span><\/span>velocidade constante de 2m\/s;<\/b><\/span><\/span><\/span><\/p>\n

a) Quantos metros <\/b><\/span><\/span><\/span>essa pessoa caminha em <\/b><\/span><\/span><\/span>60s?<\/b><\/span><\/span><\/span><\/p>\n

b) Quantos passos<\/b><\/span><\/span><\/span> ela d\u00e1 <\/b><\/span><\/span><\/span>por segundo?<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

24-(OLIMPIADA PAULISTA DE F\u00cdSICA)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Oscar de 2,05 m de altura <\/b><\/span><\/span><\/span>e o seu amigo <\/b><\/span><\/span><\/span>Jo\u00e3o de apenas 1,60 m partem juntos <\/b><\/span><\/span><\/span>para uma <\/b><\/span><\/span><\/span>caminhada de 5 km ao longo de uma pista de prepara\u00e7\u00e3o f\u00edsica. <\/b><\/span><\/span><\/span>\"\"<\/p>\n

Com <\/b><\/span><\/span><\/span>passadas que medem o dobro das de Jo\u00e3o, Oscar caminhou os<\/b><\/span><\/span><\/span> <\/b>primeiros 2 Km, tendo sempre ao seu lado o seu companheiro Jo\u00e3o,<\/b><\/span><\/span><\/span> quando <\/b><\/span><\/span><\/span>teve que parar por um momento,mas<\/b><\/span><\/span><\/span><\/p>\n

pediu que o Jo\u00e3o seguisse em frente. Jo\u00e3o manteve o seu ritmo <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>depois de certo tempo, Oscar o alcan\u00e7a completando a caminhada lado a lado .<\/b><\/span><\/span><\/span><\/p>\n

Podemos afirmar que:<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>Nos <\/b><\/span><\/span><\/span>primeiros 2 Km a velocidade de Oscar <\/b><\/span><\/span><\/span>\u00e9 o <\/b><\/span><\/span><\/span>dobro da de Jo\u00e3o .<\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>Nos <\/b><\/span><\/span><\/span>primeiros 2 Km a velocidade de Jo\u00e3o <\/b><\/span><\/span><\/span>foi o <\/b><\/span><\/span><\/span>dobro da de Oscar.<\/b><\/span><\/span><\/span><\/p>\n

c) Ambos completam a caminhada <\/b><\/span><\/span><\/span>de <\/b><\/span><\/span><\/span>5 km com a mesma velocidade m\u00e9dia<\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>Ao <\/b><\/span><\/span><\/span>longo dos 5 km<\/b><\/span><\/span><\/span> a <\/b><\/span><\/span><\/span>velocidade m\u00e9dia de Oscar foi maior que a de Jo\u00e3o.<\/b><\/span><\/span><\/span> <\/b><\/p>\n

e) <\/b><\/span><\/span><\/span>Como <\/b><\/span><\/span><\/span>as passadas de Oscar medem o dobro das de Jo\u00e3o, a acelera\u00e7\u00e3o de Oscar <\/b><\/span><\/span><\/span>sempre foi maior <\/b><\/span><\/span><\/span>que a de Jo\u00e3o<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

25-(CESGRANRIO-RJ)\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Uma <\/b><\/span><\/span><\/span>patrulha rodovi\u00e1ria mede o tempo <\/b><\/span><\/span><\/span>que <\/b><\/span><\/span><\/span>cada ve\u00edculo leva para percorrer um trecho de 400m <\/b><\/span><\/span><\/span>de estrada.\u00a0 <\/b><\/span><\/span><\/span>\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>autom\u00f3vel percorre a primeira metade do trecho com velocidade de 140 km\/h.\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

Sendo\u00a0 de\u00a0 <\/b><\/span><\/span><\/span>80 km\/h\u00a0 a\u00a0 velocidade\u00a0 limite permitida, <\/b><\/span><\/span><\/span>qual deve ser a <\/b><\/span><\/span><\/span>maior velocidade m\u00e9dia do carro na segunda metade do trecho para evitar ser multado?<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

26-(PUC-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

Numa <\/b><\/span><\/span><\/span>corrida de carros, <\/b><\/span><\/span><\/span>suponha que o <\/b><\/span><\/span><\/span>vencedor gastou 1 h 30 min para completar o circuito, desenvolvendo<\/b><\/span><\/span><\/span> uma <\/b><\/span><\/span><\/span>velocidade escalar m\u00e9dia de 240 km\/h, <\/b><\/span><\/span><\/span>enquanto que um outro carro, o <\/b><\/span><\/span><\/span>segundo colocado, desenvolveu a velocidade escalar m\u00e9dia de 236 km\/h.<\/b><\/span><\/span><\/span> <\/b><\/p>\n

Se a <\/b><\/span><\/span><\/span>pista tem 30 km, quantas voltas o carro vencedor chegou \u00e0 frente do segundo colocado?<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

27- (UNESP-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Uma <\/b><\/span><\/span><\/span>caixa de papel\u00e3o vazia, <\/b><\/span><\/span><\/span>transportada na carroceria de um <\/b><\/span><\/span><\/span>caminh\u00e3o que trafega a 90 km\/h <\/b><\/span><\/span><\/span>num trecho <\/b><\/span><\/span><\/span>reto de uma estrada, \u00e9 atravessada por uma bala perdida.<\/b><\/span><\/span><\/span> <\/b><\/p>\n

A <\/b><\/span><\/span><\/span>largura <\/b><\/span><\/span><\/span>da caixa \u00e9 de <\/b><\/span><\/span><\/span>2,00 m, e a dist\u00e2ncia entre as retas perpendiculares<\/b><\/span><\/span><\/span>\"\"<\/p>\n

\u00e0s <\/b><\/span><\/span><\/span>duas laterais perfuradas da caixa e que passam, respectivamente, pelos orif\u00edcios de entrada e de sa\u00edda da bala, ambos na mesma altura, \u00e9 de 0,20 m.
\na) <\/b><\/span><\/span><\/span>Supondo que a <\/b><\/span><\/span><\/span>dire\u00e7\u00e3o do disparo \u00e9 perpendicular \u00e0s laterais perfuradas da caixa <\/b><\/span><\/span><\/span>e ao <\/b><\/span><\/span><\/span>deslocamento do caminh\u00e3o <\/b><\/span><\/span><\/span>e que o <\/b><\/span><\/span><\/span>atirador estava parado na estrada, determine a velocidade da bala.
\nb) <\/b><\/span><\/span><\/span>Supondo, ainda, que o <\/b><\/span><\/span><\/span>caminh\u00e3o se desloca para a direita, determine qual dos orif\u00edcios, A ou B \u00e9 o de entrada.<\/b><\/span><\/span><\/span><\/p>\n

28-(UNESP-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

Num <\/b><\/span><\/span><\/span>caminh\u00e3o tanque <\/b><\/span><\/span><\/span>em <\/b><\/span><\/span><\/span>movimento,<\/b><\/span><\/span><\/span> uma <\/b><\/span><\/span><\/span>torneira mal fechada goteja a raz\u00e3o de 2 gotas por segundo. Determine a velocidade<\/b><\/span><\/span><\/span> do caminh\u00e3o <\/b><\/span><\/span><\/span>sabendo que a dist\u00e2ncia entre as marcas sucessivas deixadas pelas gotas no asfalto \u00e9 de <\/b><\/span><\/span><\/span><\/p>\n

2,5 m<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

29-(FUVEST-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>conhecido autor de contos <\/b><\/span><\/span><\/span>associou o <\/b><\/span><\/span><\/span>tempo restante de vida de uma personagem <\/b><\/span><\/span><\/span>\u00e0 <\/b><\/span><\/span><\/span>dura\u00e7\u00e3o de escoamento da areia<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

de uma ampulheta. <\/b><\/span><\/span><\/span><\/p>\n

A <\/b><\/span><\/span><\/span>areia escoa uniformemente a raz\u00e3o de 200 gramas por dia.<\/b><\/span><\/span><\/span> <\/b><\/p>\n

Sabendo-se que <\/b><\/span><\/span><\/span>a ampulheta comporta 30 kg de areia, <\/b><\/span><\/span><\/span>e que <\/b><\/span><\/span><\/span>2\/3 do seu conte\u00fado inicial j\u00e1 escoaram, quantos dias de vida restam a essa personagem?<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

30-(UFF-RJ)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Segundo os <\/b><\/span><\/span><\/span>autores de um artigo<\/b><\/span><\/span><\/span>\u00a0publicado recentemente na revista The\u00a0Physics Teacher*, <\/b><\/span><\/span><\/span>o que faz do corredor\u00a0Usain<\/b><\/span><\/span><\/span>\"\"<\/p>\n

Bolt um atleta especial \u00e9 o\u00a0tamanho de sua passada.<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span><\/p>\n

Para <\/b><\/span><\/span><\/span>efeito de compara\u00e7\u00e3o, Usain Bolt\u00a0precisa apenas de 41 passadas para\u00a0completar os 100m de uma corrida,\u00a0enquanto outros atletas de elite\u00a0necessitam de 45 passadas para\u00a0completar esse percurso em 10s.
\n<\/b><\/span><\/span><\/span>*A. Shinabargar, M. Hellvich; B. Baker,\u00a0The Physics Teacher 48, 385. Sept.\u00a02010.
\n<\/b><\/span><\/span><\/span><\/span>Marque <\/b><\/span><\/span><\/span>a <\/b><\/span><\/span><\/span>alternativa<\/b><\/span><\/span><\/span> que <\/b><\/span><\/span><\/span>apresenta o\u00a0tempo de Usain Bolt, para os 100 metros\u00a0rasos<\/b><\/span><\/span><\/span>, se ele <\/b><\/span><\/span><\/span>mantivesse o tamanho\u00a0m\u00e9dio de sua passada<\/b><\/span><\/span><\/span>, mas <\/b><\/span><\/span><\/span>desse\u00a0passadas <\/b><\/span><\/span><\/span>com a <\/b><\/span><\/span><\/span>frequ\u00eancia m\u00e9dia de um\u00a0outro atleta, como os referidos\u00a0anteriormente.<\/b><\/span><\/span><\/span><\/p>\n

\"\"
\n<\/b><\/span><\/span><\/span><\/p>\n

31-(ITA-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>avi\u00e3o, voando horizontalmente a 4.000m de altura <\/b><\/span><\/span><\/span>numa <\/b><\/span><\/span><\/span>trajet\u00f3ria retil\u00ednea <\/b><\/span><\/span><\/span>com <\/b><\/span><\/span><\/span>velocidade<\/b><\/span><\/span><\/span> <\/b>constante,<\/b><\/span><\/span><\/span> <\/b>passou<\/b><\/span><\/span><\/span> por um <\/b><\/span><\/span><\/span>ponto A e, depois, por um ponto B situado a 3.000m do primeiro<\/b><\/span><\/span><\/span>. <\/b><\/span><\/span><\/span><\/p>\n

Um <\/b><\/span><\/span><\/span>observador no solo, parado no ponto 0 verticalmente abaixo de B, <\/b><\/span><\/span><\/span>come\u00e7ou a <\/b><\/span><\/span><\/span>ouvir o som do avi\u00e3o emitido em A, 4,00 segundos antes de ouvir o som proveniente de B.<\/b><\/span><\/span><\/span> <\/b>\"\"<\/p>\n

Se a <\/b><\/span><\/span><\/span>velocidade do som no ar <\/b><\/span><\/span><\/span>era de <\/b><\/span><\/span><\/span>320 m\/s<\/b><\/span><\/span><\/span>, a <\/b><\/span><\/span><\/span>velocidade do avi\u00e3o <\/b><\/span><\/span><\/span>era de:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

32-(FUVEST-SP)<\/b><\/span><\/span><\/span><\/p>\n

\u00a0\"\"<\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>atleta A, com passo igual a 10cm, <\/b><\/span><\/span><\/span>est\u00e1 <\/b><\/span><\/span><\/span>correndo com ritmo de 18 passos por segundo. <\/b><\/span><\/span><\/span>Um outro <\/b><\/span><\/span><\/span>atleta B tem passo igual a 90cm.<\/b><\/span><\/span><\/span><\/p>\n

a) Qual <\/b><\/span><\/span><\/span>deve ser o <\/b><\/span><\/span><\/span>ritmo do atleta B para se manter emparelhado com A?<\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>Se o <\/b><\/span><\/span><\/span>atleta B correr com o mesmo ritmo de A, <\/b><\/span><\/span><\/span>qual deve ser a <\/b><\/span><\/span><\/span>dist\u00e2ncia entre os dois ap\u00f3s 2 minutos de corrida?<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

33- (FISICAEVESTIBULAR)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Da praia um <\/b><\/span><\/span><\/span>salva-vidas <\/b><\/span><\/span><\/span>observa, no <\/b><\/span><\/span><\/span>mar agitado, <\/b><\/span><\/span><\/span>que as <\/b><\/span><\/span><\/span>cristas das grandes ondas atingem a praia <\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

em intervalos de tempo sucessivos de 15 s, <\/b><\/span><\/span><\/span>e que a <\/b><\/span><\/span><\/span>dist\u00e2ncia entre duas cristas sucessivas \u00e9 de 45m. <\/b><\/span><\/span><\/span><\/p>\n

Ele <\/b><\/span><\/span><\/span>v\u00ea uma crian\u00e7a se afogando<\/b><\/span><\/span><\/span> e se <\/b><\/span><\/span><\/span>atira no mar logo depois da chegada de uma crista, <\/b><\/span><\/span><\/span>nadando com <\/b><\/span><\/span><\/span>velocidade de 0,5 m\/s em rela\u00e7\u00e3o \u00e0 praia. Demora 4 minutos <\/b><\/span><\/span><\/span>para <\/b><\/span><\/span><\/span>alcan\u00e7ar a crian\u00e7a <\/b><\/span><\/span><\/span>que est\u00e1 se afogando e que <\/b><\/span><\/span><\/span>est\u00e1 em repouso em rela\u00e7\u00e3o \u00e0 \u00e1gua.<\/b><\/span><\/span><\/span><\/p>\n

a) Quantas cristas <\/b><\/span><\/span><\/span>o salva-vidas <\/b><\/span><\/span><\/span>deve ultrapassar at\u00e9 alcan\u00e7ar a crian\u00e7a?<\/b><\/span><\/span><\/span><\/p>\n

b) Para o salva-vidas, qual o intervalo de tempo decorrido para transpor duas cristas sucessivas?<\/b><\/span><\/span><\/span><\/p>\n

c) Suponha<\/b><\/span><\/span><\/span> que o <\/b><\/span><\/span><\/span>salva-vidas, junto com a crian\u00e7a j\u00e1 resgatada e presa a ele, <\/b><\/span><\/span><\/span>esteja <\/b><\/span><\/span><\/span>retornando<\/b><\/span><\/span><\/span> \u00e0 <\/b><\/span><\/span><\/span>praia, nadando com velocidade de 1m\/s. Nesse caso, quanto tempo eles demoram a chegar \u00e0 praia?<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

34-(FGV-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"\u00a0<\/span><\/p>\n

Empresas de <\/b><\/span><\/span><\/span>transportes rodovi\u00e1rios <\/b><\/span><\/span><\/span>equipam seus ve\u00edculos com um <\/b><\/span><\/span><\/span>aparelho chamado tac\u00f3grafo, <\/b><\/span><\/span><\/span>capaz de <\/b><\/span><\/span><\/span>produzir sobre um disco de papel, o registro ininterrupto do movimento do ve\u00edculo no decorrer de um dia.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Analisando<\/b><\/span><\/span><\/span> os registros da <\/b><\/span><\/span><\/span>folha do tac\u00f3grafo representada acima, <\/b><\/span><\/span><\/span>correspondente ao <\/b><\/span><\/span><\/span>per\u00edodo de um dia completo<\/b><\/span><\/span><\/span>, a empresa pode <\/b><\/span><\/span><\/span>avaliar que seu ve\u00edculo percorreu nesse tempo uma dist\u00e2ncia, em km, aproximadamente igual a<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\u00a0<\/span><\/p>\n

35-(FISICAEVESTIBULAR)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Num <\/b><\/span><\/span><\/span>lago de \u00e1guas de \u00e1guas paradas um pescador <\/b><\/span><\/span><\/span>faz seu barco a remo <\/b><\/span><\/span><\/span>atingir uma velocidade m\u00e1xima de 4 km\/h.<\/b><\/span><\/span><\/span><\/p>\n

Mantendo o <\/b><\/span><\/span><\/span>mesmo ritmo dos remos m tenta atravessar um rio cujas \u00e1guas se movem com uma velocidade de 2km\/h<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

como indica a <\/b><\/span><\/span><\/span>figura acima. O rio tem largura de 2 km.<\/b><\/span><\/span><\/span><\/p>\n

Se o <\/b><\/span><\/span><\/span>barco parte do ponto A, em qual ponto da outra margem o barco chegar\u00e1?<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

36-(UFJF-MG)<\/b><\/span><\/span><\/span> <\/b>Um homem <\/b><\/span><\/span><\/span>parado numa escada rolante leva 10 s para desc\u00ea-la em sua totalidade.<\/b><\/span><\/span><\/span><\/p>\n

O <\/b><\/span><\/span><\/span>mesmo homem leva 15 s para subir toda a escada rolante de volta, <\/b><\/span><\/span><\/span>caminhando <\/b><\/span><\/span><\/span>contra<\/b><\/span><\/span><\/span> o <\/b><\/span><\/span><\/span>movimento dela. <\/b><\/span><\/span><\/span>\"\"<\/p>\n

Quanto tempo <\/b><\/span><\/span><\/span>o homem <\/b><\/span><\/span><\/span>levar\u00e1 para descer a mesma escada rolante, caminhando com a mesma velocidade com que subiu?<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>5,00 s\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>3,75 s\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>10,00 s\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>15,00 s\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span><\/span>7,50 s<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

37-(UFMG-MG)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Dois <\/b><\/span><\/span><\/span>barcos – I e II – movem-se, em um lago, <\/b><\/span><\/span><\/span>com <\/b><\/span><\/span><\/span>velocidade constante, de mesmo m\u00f3dulo,<\/b><\/span><\/span><\/span> como representado na figura:<\/b><\/span><\/span><\/span>\"\"<\/p>\n

Em <\/b><\/span><\/span><\/span>rela\u00e7\u00e3o \u00e0 \u00e1gua, a dire\u00e7\u00e3o do movimento do barco I \u00e9 perpendicular \u00e0 do barco II e as linhas tracejadas indicam o sentido do deslocamento dos barcos.<\/b><\/span><\/span><\/span><\/p>\n

Considerando-se <\/b><\/span><\/span><\/span>essas informa\u00e7\u00f5es, \u00e9 CORRETO afirmar <\/b><\/span><\/span><\/span>que a <\/b><\/span><\/span><\/span>velocidade do barco II, medida por uma pessoa que est\u00e1 no barco I, \u00e9 mais bem representada pelo vetor<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>P.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span><\/span>Q.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span><\/span>R.\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span><\/span>S.<\/b><\/span><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

\u00a0<\/span>38-(UFMG-MG)<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>menino flutua em uma b\u00f3ia <\/b><\/span><\/span><\/span>que est\u00e1 se <\/b><\/span><\/span><\/span>movimentando, levada pela correnteza de um rio.<\/b><\/span><\/span><\/span> <\/b><\/p>\n

Uma <\/b><\/span><\/span><\/span>outra b\u00f3ia, que flutua no mesmo rio a certa dist\u00e2ncia do menino, tamb\u00e9m<\/b><\/span><\/span><\/span> est\u00e1 <\/b><\/span><\/span><\/span>descendo a correnteza. <\/b><\/span><\/span><\/span><\/p>\n

As <\/b><\/span><\/span><\/span>posi\u00e7\u00f5es das duas b\u00f3ias e o sentido da correnteza <\/b><\/span><\/span><\/span>est\u00e3o indicados <\/b><\/span><\/span><\/span>na figura.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Considere que a <\/b><\/span><\/span><\/span>velocidade da correnteza \u00e9 a mesma em todos os pontos do rio.<\/b><\/span><\/span><\/span><\/p>\n

Nesse caso, <\/b><\/span><\/span><\/span>para alcan\u00e7ar a segunda b\u00f3ia, o menino deve nadar na dire\u00e7\u00e3o indicada pela linha:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\u00a0<\/span><\/p>\n

39-(ITA-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>barco<\/b><\/span><\/span><\/span> leva <\/b><\/span><\/span><\/span>10 horas para subir e 4 horas para descer um mesmo trecho do rio Amazonas<\/b><\/span><\/span><\/span>, mantendo <\/b><\/span><\/span><\/span>constante<\/b><\/span><\/span><\/span> o <\/b><\/span><\/span><\/span>m\u00f3dulo de sua velocidade em rela\u00e7\u00e3o \u00e0 \u00e1gua.<\/b><\/span><\/span><\/span> <\/b>\"\"<\/p>\n

Quanto tempo <\/b><\/span><\/span><\/span>o barco leva <\/b><\/span><\/span><\/span>para descer esse trecho com os motores desligados?<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>14 horas e 30 minutos\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>13 horas e 20 minutos\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>7 horas e 20 minutos\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>10 horas<\/b><\/span><\/span><\/span><\/p>\n

e) N\u00e3o \u00e9 poss\u00edvel resolver <\/b><\/span><\/span><\/span>porque <\/b><\/span><\/span><\/span>n\u00e3o foi dada a dist\u00e2ncia percorrida pelo barco.<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span><\/p>\n

40-(FUVEST-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

No est\u00e1dio do <\/b><\/span><\/span><\/span>Morumbi 120.000 torcedores <\/b><\/span><\/span><\/span>assistem a um jogo. <\/b><\/span><\/span><\/span><\/p>\n

Atrav\u00e9s<\/b><\/span><\/span><\/span> de <\/b><\/span><\/span><\/span>cada uma das 6 sa\u00eddas dispon\u00edveis <\/b><\/span><\/span><\/span>podem <\/b><\/span><\/span><\/span>passar 1.000 pessoas por minuto. <\/b><\/span><\/span><\/span>Qual o <\/b><\/span><\/span><\/span>tempo m\u00ednimo necess\u00e1rio para se esvaziar o est\u00e1dio?<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\u00a0<\/span><\/p>\n

41-(UEFS-BA)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Em uma corrida\u00a0<\/b><\/span><\/span><\/span>de 100 metros rasos,<\/b><\/span><\/span><\/span>\u00a0o\u00a0<\/b><\/span><\/span><\/span>vencedor<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>completou o percurso, desenvolvendo\u00a0velocidade<\/b><\/span><\/span><\/span><\/p>\n

escalar m\u00e9dia de 32 km\/h, <\/b><\/span><\/span><\/span>enquanto o<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>segundo colocado\u00a0<\/b><\/span><\/span><\/span>desenvolveu<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>velocidade escalar m\u00e9dia de 30 km\/h.<\/b><\/span><\/span><\/span>\"\"<\/p>\n

No<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>final da corrida<\/b><\/span><\/span><\/span>, a\u00a0<\/b><\/span><\/span><\/span>dist\u00e2ncia que separava o vencedor do segundo colocado<\/b><\/span><\/span><\/span>,\u00a0<\/b><\/span><\/span><\/span>em metros,\u00a0<\/b><\/span><\/span><\/span>era de<\/b><\/span><\/span><\/span><\/p>\n

A) <\/b><\/span><\/span><\/span>5,50 <\/b><\/span><\/span><\/span><\/p>\n

B) <\/b><\/span><\/span><\/span>5,75 <\/b><\/span><\/span><\/span><\/p>\n

C) <\/b><\/span><\/span><\/span>6,00 <\/b><\/span><\/span><\/span><\/p>\n

D) <\/b><\/span><\/span><\/span>6,25 <\/b><\/span><\/span><\/span><\/p>\n

E) <\/b><\/span><\/span><\/span>7,802<\/b><\/span><\/span><\/span><\/p>\n

 <\/p>\n

Confira a resolu\u00e7\u00e3o comentada dos exerc\u00edcios<\/span><\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"

Conceitos de Movimento e Repouso, Velocidade M\u00e9dia, Velocidade Relativa e Composi\u00e7\u00e3o de Movimentos Formul\u00e1rio Repouso e Movimento Defini\u00e7\u00e3o de repouso e de movimento Um corpo est\u00e1 em movimento em rela\u00e7\u00e3o a outro corpo quando a dist\u00e2ncia entre eles variar no decorrer do tempo. Caso contr\u00e1rio estar\u00e1 em repouso. Velocidade (escalar) M\u00e9dia Considere um ponto material percorrendo certa trajet\u00f3ria, passando no<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2508,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-2520","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/2520","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/comments?post=2520"}],"version-history":[{"count":2,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/2520\/revisions"}],"predecessor-version":[{"id":2525,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/2520\/revisions\/2525"}],"up":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/2508"}],"wp:attachment":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/media?parent=2520"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}