{"id":4071,"date":"2018-07-20T17:49:10","date_gmt":"2018-07-20T17:49:10","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=4071"},"modified":"2024-08-21T17:24:28","modified_gmt":"2024-08-21T17:24:28","slug":"cinematica-3-movimento-uniforme-e-encontro-de-moveis-em-mu","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/formulario\/cinematica-3-movimento-uniforme-e-encontro-de-moveis-em-mu\/","title":{"rendered":"Cinem\u00e1tica 3 – Movimento uniforme e encontro de m\u00f3veis em MU"},"content":{"rendered":"

Formul\u00e1rio completo de F\u00edsica com informa\u00e7\u00f5es \u00fateis <\/b><\/span><\/span><\/span><\/p>\n

(dicas para vestibulares)<\/b><\/span><\/span><\/span><\/p>\n

Cinem\u00e1tica 3<\/b><\/span><\/span><\/span><\/p>\n

Movimento uniforme e encontro de m\u00f3veis em MU<\/b><\/span><\/span><\/span><\/p>\n

Movimento uniforme<\/b><\/span><\/span><\/span><\/p>\n

Denomina-se movimento uniforme <\/b><\/span><\/span><\/span>(MU) <\/b><\/span><\/span><\/span>qualquer movimento <\/b><\/span><\/span><\/span>cuja <\/b><\/span><\/span><\/span>velocidade escalar seja constante <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>diferente de zero.<\/b><\/span><\/span><\/span><\/p>\n

Fun\u00e7\u00e3o Hor\u00e1ria do MU<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

<\/p>\n

Informa\u00e7\u00f5es \u00fateis (dicas)<\/b><\/span><\/span><\/span><\/p>\n

\u00a0Em <\/b><\/span><\/span><\/span>todo (MU)<\/b><\/span><\/span><\/span> a <\/b><\/span><\/span><\/span>velocidade instant\u00e2nea <\/b><\/span><\/span><\/span>(indica\u00e7\u00e3o do veloc\u00edmetro em cada instante) <\/b><\/span><\/span><\/span>coincide com a velocidade m\u00e9dia em qualquer intervalo de tempo considerado.<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

Na <\/b><\/span><\/span><\/span>fun\u00e7\u00e3o hor\u00e1ria S = S<\/b><\/span><\/span><\/span>o<\/b><\/span><\/span><\/sub><\/span>\u00a0+ V.t ,<\/b><\/span><\/span><\/span> se <\/b><\/span><\/span><\/span>V \u00e9 negativo<\/b><\/span><\/span><\/span> o <\/b><\/span><\/span><\/span>movimento \u00e9 retr\u00f3grado <\/b><\/span><\/span><\/span>(se move em <\/b><\/span><\/span><\/span>sentido<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

contr\u00e1rio<\/b><\/span><\/span><\/span> ao dos <\/b><\/span><\/span><\/span>marcos crescentes <\/b><\/span><\/span><\/span>da trajet\u00f3ria) e, se \u00e9 <\/b><\/span><\/span><\/span>positivo o movimento \u00e9 progressivo <\/b><\/span><\/span><\/span>(se move <\/b><\/span><\/span><\/span>a favor dos marcos crescentes <\/b><\/span><\/span><\/span>da trajet\u00f3ria).<\/b><\/span><\/span><\/span><\/p>\n

Encontro de m\u00f3veis em MU<\/b><\/span><\/span><\/span><\/p>\n

Suponha dois m\u00f3veis (A e B)<\/b><\/span><\/span><\/span> em <\/b><\/span><\/span><\/span>MU <\/b><\/span><\/span><\/span>se movendo com <\/b><\/span><\/span><\/span>fun\u00e7\u00f5es hor\u00e1rias S<\/b><\/span><\/span><\/span>A\u00a0<\/b><\/span><\/span><\/sub><\/span>= S<\/b><\/span><\/span><\/span>0A<\/b><\/span><\/span><\/sub><\/span>+ V<\/b><\/span><\/span><\/span>A<\/b><\/span><\/span><\/sub><\/span>.t e S<\/b><\/span><\/span><\/span>B\u00a0<\/b><\/span><\/span><\/sub><\/span>= S<\/b><\/span><\/span><\/span>0B<\/b><\/span><\/span><\/sub><\/span>\u00a0+ V<\/b><\/span><\/span><\/span>B<\/b><\/span><\/span><\/sub><\/span>.t <\/b><\/span><\/span><\/span>se movendo de maneira que <\/b><\/span><\/span><\/span>eles se encontrem <\/b><\/span><\/span><\/span>e, se voc\u00ea <\/b><\/span><\/span><\/span>quiser encontrar o tempo do encontro basta igualar as duas equa\u00e7\u00f5es <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>isolar t. <\/b><\/span><\/span><\/span><\/p>\n

Substituindo<\/b><\/span><\/span><\/span> esse <\/b><\/span><\/span><\/span>t numa das equa\u00e7\u00f5es <\/b><\/span><\/span><\/span>voc\u00ea <\/b><\/span><\/span><\/span>determina a posi\u00e7\u00e3o <\/b><\/span><\/span><\/span>(espa\u00e7o, local) <\/b><\/span><\/span><\/span>do encontro.<\/b><\/span><\/span><\/span><\/p>\n

Para <\/b><\/span><\/span><\/span>conferir o procedimento <\/b><\/span><\/span><\/span>veja os <\/b><\/span><\/span><\/span>exerc\u00edcios 10, 11, 12 e 13, com as respectivas resolu\u00e7\u00f5es comentadas,<\/b><\/span><\/span><\/span> em <\/b><\/span><\/span><\/span>fisicaevestibular.com.br \u2013 Mec\u00e2nica \u2013 Cinem\u00e1tica – <\/b><\/span><\/span><\/span>Movimento uniforme e encontro de m\u00f3veis em MU.<\/b><\/span><\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Formul\u00e1rio completo de F\u00edsica com informa\u00e7\u00f5es \u00fateis (dicas para vestibulares) Cinem\u00e1tica 3 Movimento uniforme e encontro de m\u00f3veis em MU Movimento uniforme Denomina-se movimento uniforme (MU) qualquer movimento cuja velocidade escalar seja constante e diferente de zero. Fun\u00e7\u00e3o Hor\u00e1ria do MU Informa\u00e7\u00f5es \u00fateis (dicas) \u00a0Em todo (MU) a velocidade instant\u00e2nea (indica\u00e7\u00e3o do veloc\u00edmetro em cada instante) coincide com a velocidade<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":3987,"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-4071","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4071","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=4071"}],"version-history":[{"count":1,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4071\/revisions"}],"predecessor-version":[{"id":4072,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4071\/revisions\/4072"}],"up":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/3987"}],"wp:attachment":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/media?parent=4071"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}