{"id":16879,"date":"2024-09-21T14:57:54","date_gmt":"2024-09-21T17:57:54","guid":{"rendered":"https:\/\/xequematenem.com.br\/blog\/?p=16879"},"modified":"2024-09-21T14:57:56","modified_gmt":"2024-09-21T17:57:56","slug":"questao-105-enem-2017-2","status":"publish","type":"post","link":"https:\/\/xequematenem.com.br\/blog\/questao-105-enem-2017-2\/","title":{"rendered":"Quest\u00e3o 105 &#8211; ENEM 2017"},"content":{"rendered":"\n<p>O brinquedo pula-pula (cama el\u00e1stica) \u00e9 composto por uma lona circular flex\u00edvel horizontal presa por molas \u00e0 sua borda. As crian\u00e7as brincam pulando sobre ela, alterando e alternando suas formas de energia. Ao pular verticalmente, desprezando o atrito com o ar e os movimentos de rota\u00e7\u00e3o do corpo enquanto salta, uma crian\u00e7a realiza um movimento peri\u00f3dico vertical em torno da posi\u00e7\u00e3o de equil\u00edbrio da lona (h = 0), passando pelos pontos de m\u00e1xima e de m\u00ednima alturas, h<sub>m\u00e1x<\/sub> e h<sub>m\u00edn<\/sub>, respectivamente. Esquematicamente, o esbo\u00e7o do gr\u00e1fico da energia cin\u00e9tica da crian\u00e7a em fun\u00e7\u00e3o de sua posi\u00e7\u00e3o vertical na situa\u00e7\u00e3o descrita \u00e9:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"295\" height=\"635\" src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-602.png\" alt=\"\" class=\"wp-image-16880\" title=\"\" srcset=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-602.png 295w, https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-602-139x300.png 139w\" sizes=\"(max-width: 295px) 100vw, 295px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\"><strong>Solu\u00e7\u00e3o<\/strong><\/p>\n\n\n\n<p>Quando a crian\u00e7a est\u00e1 caindo na cama el\u00e1stica e chegando na altura m\u00ednima a energia \u00e9 representada por uma fun\u00e7\u00e3o do segundo grau, dada por<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"199\" height=\"82\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-607.png\" alt=\"\" class=\"wp-image-16885 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 199px; --smush-placeholder-aspect-ratio: 199\/82;\"><\/figure>\n\n\n\n<p>logo, a parte negativa da posi\u00e7\u00e3o gr\u00e1fico, <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"114\" height=\"45\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-605.png\" alt=\"\" class=\"wp-image-16883 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 114px; --smush-placeholder-aspect-ratio: 114\/45;\"><\/figure>\n\n\n\n<p>corresponde a energia el\u00e1stica.J\u00e1 a parte positiva<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"130\" height=\"45\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-606.png\" alt=\"\" class=\"wp-image-16884 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 130px; --smush-placeholder-aspect-ratio: 130\/45;\"><\/figure>\n\n\n\n<p>corresponde a energia cin\u00e9tica menos a energia potencial gravitacional<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"152\" height=\"53\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-604.png\" alt=\"\" class=\"wp-image-16882 lazyload\" title=\"\" data-srcset=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-604.png 152w, https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-604-150x53.png 150w\" data-sizes=\"(max-width: 152px) 100vw, 152px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 152px; --smush-placeholder-aspect-ratio: 152\/53;\" \/><\/figure>\n\n\n\n<p>Que representa uma equa\u00e7\u00e3o do primeiro grau, com coeficiente angular negativo<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"216\" height=\"168\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-603.png\" alt=\"\" class=\"wp-image-16881 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 216px; --smush-placeholder-aspect-ratio: 216\/168;\"><\/figure>\n\n\n\n<p>Sendo assim, o gr\u00e1fico de energia por posi\u00e7\u00e3o deve ser o gr\u00e1fico C<\/p>\n\n\n\n<p><strong>Alternativa C<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>O brinquedo pula-pula (cama el\u00e1stica) \u00e9 composto por uma lona circular flex\u00edvel horizontal presa por molas \u00e0 sua borda. As crian\u00e7as brincam pulando sobre ela, alterando e alternando suas formas de energia. Ao pular verticalmente, desprezando o atrito com o ar e os movimentos de rota\u00e7\u00e3o do corpo enquanto salta, uma crian\u00e7a realiza um movimento [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":16880,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17,22],"tags":[],"area-do-conhecimento":[116,121],"assunto":[],"class_list":["post-16879","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-questoes-do-enem","category-22","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\/16879","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=16879"}],"version-history":[{"count":1,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/16879\/revisions"}],"predecessor-version":[{"id":16886,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/16879\/revisions\/16886"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/media\/16880"}],"wp:attachment":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/media?parent=16879"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/categories?post=16879"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/tags?post=16879"},{"taxonomy":"area-do-conhecimento","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/area-do-conhecimento?post=16879"},{"taxonomy":"assunto","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/assunto?post=16879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}