{"id":16438,"date":"2024-09-19T13:19:08","date_gmt":"2024-09-19T16:19:08","guid":{"rendered":"https:\/\/xequematenem.com.br\/blog\/?p=16438"},"modified":"2024-09-19T13:19:09","modified_gmt":"2024-09-19T16:19:09","slug":"questao-120-enem-ppl-2021","status":"publish","type":"post","link":"https:\/\/xequematenem.com.br\/blog\/questao-120-enem-ppl-2021\/","title":{"rendered":"Quest\u00e3o 120 &#8211;\u00a0 &#8211; ENEM PPL 2021"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Foi realizada uma per\u00edcia t\u00e9cnica de um acidente de tr\u00e2nsito em que um carro colidiu com uma van em um cruzamento a <img decoding=\"async\" width=\"23\" height=\"13\" data-src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXclUHclF8AJ_oPc1uQSz8ZSYaEwJBnX4KCOmJ-SFNm_62BxtMWTsQbbyL1i_eJu3SQ7ifzx3j2AxxuJzicPYAt930hQ2dn_ZbxQ3tCo9xSeR68ScuzVXCOFISbqYMWf2PDY6DGqDRDX6MDk_9hINU7cobEx?key=cZZoT8Y6vO0sxb39wzql9g\" alt=\"\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 23px; --smush-placeholder-aspect-ratio: 23\/13;\">, como esquematizado na figura. A van tem massa duas vezes maior que o carro. Depois da colis\u00e3o, os dois ve\u00edculos permaneceram \u201cgrudados\u201d um ao outro e deslocaram-se a um \u00e2ngulo de 45\u00ba com a dire\u00e7\u00e3o de suas velocidades iniciais. Um radar mediu o m\u00f3dulo da velocidade da van, imediatamente antes da colis\u00e3o, encontrando <img decoding=\"async\" width=\"63\" height=\"17\" data-src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXcRDTlqon2EBRi-lVtPaJneiZTh1TopNMa_tS2jZk0z8_JX8PEWqToJN3zDdeYEDeVHkZqU5hflJ0NSM1l5A-6pGbtOecJWYnfWtC4eXojdQkU3pNhJ0YRINFvduF4w9EUNFrPsTiPmbEunSc7U0DVGzpAl?key=cZZoT8Y6vO0sxb39wzql9g\" alt=\"\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 63px; --smush-placeholder-aspect-ratio: 63\/17;\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"295\" height=\"292\" src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-413.png\" alt=\"\" class=\"wp-image-16439\" title=\"\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Qual o valor do m\u00f3dulo da velocidade do carro, em quil\u00f4metro por hora (km\/h), imediatamente antes da colis\u00e3o?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A) <img decoding=\"async\" data-src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXeQD6bstaZe0f4MhyBJfgw6fPPCU0LSgC1LtVuMAfBP_TepS1Gy0cPQiks3Hlv-GScWSHpfs8rsnhn0MXIi-f6WDHUIZqqQnh8fTf0Rsu-MuNivDijAA9LdguegWw9ju45Y6U_RjJXD5EZA5mI67asuWax4?key=cZZoT8Y6vO0sxb39wzql9g\" width=\"16\" height=\"12\" alt=\"\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 16px; --smush-placeholder-aspect-ratio: 16\/12;\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B) <img decoding=\"async\" data-src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXdmHtjWete26enNqWM9HOr1l0BXLtwpubUO_WH7163dfFexvIO54Sx21TewlN142Iu1mcvcfTkqFGeyWGPHcCy23VaSgStQkdPNGldMiXMxQaUEwLwvmPg4S8_sDaz6OOoC4G16fnHKjRSRdoXSL0QHmVeq?key=cZZoT8Y6vO0sxb39wzql9g\" width=\"39\" height=\"17\" alt=\"\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 39px; --smush-placeholder-aspect-ratio: 39\/17;\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C) <img decoding=\"async\" data-src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXekJc_hSclO7FW9-3RLoMXr0X0iw_SgAoCzI3xU_JeHsEX_Hqz8bpTi4T6sscX2tbdm_xeicVPgE-ewjlFf-Tn1_EItkEiPX3zezuhZydhBhK_Vcqs4W_morvRactAYYlowSRQLp2KibtHhcP2gDWo0n7c?key=cZZoT8Y6vO0sxb39wzql9g\" width=\"16\" height=\"13\" alt=\"\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 16px; --smush-placeholder-aspect-ratio: 16\/13;\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D) <img decoding=\"async\" data-src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXdWRv_ayb6ybJuY1n-vs9p99r2OpzWFUb3hWNI9aqavr_jg8TFYf_daUv_eTB0etD6inx2N950ocvATLunLZAuRf4X_hyLcU3DFPutrZrtMMWC1v9BBIluaZIGTA93wWpV7G3DPpo8sX-Tz7wMIHGMvi_tc?key=cZZoT8Y6vO0sxb39wzql9g\" width=\"39\" height=\"17\" alt=\"\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 39px; --smush-placeholder-aspect-ratio: 39\/17;\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">E) <img decoding=\"async\" data-src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXfa9NzVNfHsaPDu4QT1Ay6k43F90FzfxJoPaiotL7ywi0ABoDXJPg6XPvoDlMFnM-4XpCcKNKrIRurBwae3r7tvBAb1vsPKkU8EOS_w8Au0YVJd8W3YQQ-zFsU2MPBHnbVYqCQwMvFaydqEoke85Km8BWE?key=cZZoT8Y6vO0sxb39wzql9g\" width=\"16\" height=\"12\" alt=\"\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 16px; --smush-placeholder-aspect-ratio: 16\/12;\"><\/p>\n\n\n\n<p class=\"has-large-font-size wp-block-paragraph\"><strong>Solu\u00e7\u00e3o<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para calcular colis\u00f5es temos que levar em conta o momento linear de cada ve\u00edculo<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"73\" height=\"29\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-415.png\" alt=\"\" class=\"wp-image-16442 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 73px; --smush-placeholder-aspect-ratio: 73\/29;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Como os ve\u00edculos estavam perpendicular um ao outro e ap\u00f3s a colis\u00e3o se grudaram e continuaram a se mover em um angulo de 45\u00b0 temos que a soma dos dois momentos lineares. Temos que a tangente do \u00e2ngulo \u00e9 dada por<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"187\" height=\"167\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-414.png\" alt=\"\" class=\"wp-image-16440 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 187px; --smush-placeholder-aspect-ratio: 187\/167;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Alternativa E<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Foi realizada uma per\u00edcia t\u00e9cnica de um acidente de tr\u00e2nsito em que um carro colidiu com uma van em um cruzamento a , como esquematizado na figura. A van tem massa duas vezes maior que o carro. Depois da colis\u00e3o, os dois ve\u00edculos permaneceram \u201cgrudados\u201d um ao outro e deslocaram-se a um \u00e2ngulo de 45\u00ba [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":16439,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[87,100],"tags":[],"area-do-conhecimento":[116,121],"assunto":[],"class_list":["post-16438","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-questoes-ppl","category-2021-questoes-ppl","area-do-conhecimento-ciencias-da-natureza-e-suas-tecnologias","area-do-conhecimento-fisica"],"_links":{"self":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/16438","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/comments?post=16438"}],"version-history":[{"count":1,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/16438\/revisions"}],"predecessor-version":[{"id":16444,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/16438\/revisions\/16444"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/media\/16439"}],"wp:attachment":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/media?parent=16438"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/categories?post=16438"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/tags?post=16438"},{"taxonomy":"area-do-conhecimento","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/area-do-conhecimento?post=16438"},{"taxonomy":"assunto","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/assunto?post=16438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}