{"id":2742,"date":"2012-05-07T22:00:54","date_gmt":"2012-05-08T01:00:54","guid":{"rendered":"http:\/\/scienceblogs.com.br\/hypercubic\/?p=2742"},"modified":"2012-05-07T22:00:54","modified_gmt":"2012-05-08T01:00:54","slug":"numa-velocidade","status":"publish","type":"post","link":"https:\/\/www.blogs.unicamp.br\/hypercubic\/2012\/05\/numa-velocidade\/","title":{"rendered":"Numa velocidade\u2026"},"content":{"rendered":"<p align=\"justify\"><a href=\"http:\/\/scienceblogs.com.br\/hypercubic\/files\/2012\/05\/trestleC1.jpg\" data-rel=\"lightbox-image-0\" data-rl_title=\"\" data-rl_caption=\"\" title=\"\"><img fetchpriority=\"high\" decoding=\"async\" style=\"padding-left: 0px;padding-right: 0px;float: none;margin-left: auto;margin-right: auto;padding-top: 0px;border: 0px\" src=\"http:\/\/scienceblogs.com.br\/hypercubic\/files\/2012\/05\/trestleC_thumb1.jpg\" alt=\"trestleC\" width=\"640\" height=\"443\" border=\"0\" \/><\/a><\/p>\n<p align=\"justify\">E ent\u00e3o, o que houve com o sujeito que estava em nossa ponte ferrovi\u00e1ria? <a title=\"[Enigma] Numa velocidade\u2026\" href=\"http:\/\/scienceblogs.com.br\/hypercubic\/2012\/05\/enigma-numa-velocidade\/\">Voc\u00ea j\u00e1 deve saber que ele saiu ileso do encontro com o trem<\/a>, mas qual era, afinal, a velocidade da locomotiva? Eu pensei que esse enigma iria durar pelo menos uma semana, mas o <a href=\"http:\/\/scienceblogs.com.br\/hypercubic\/2012\/05\/enigma-numa-velocidade\/comment-page-1\/#comment-349\">Bruno<\/a> j\u00e1 matou a charada! A solu\u00e7\u00e3o que eu tinha era a seguinte:<!--more--><\/p>\n<p align=\"justify\">Come\u00e7ando dos 4\/7 onde estava, se ele corre <em>para<\/em> o trem, vai cobrir os 3\/7 restantes da ponte e pular na beira da linha do outro lado da ponte.<\/p>\n<p align=\"justify\">Isso significa que, se ele resolver correr <em>do<\/em> trem, tamb\u00e9m vai cobrir 3\/7 da ponte quando o trem passar por ele a 1\/7 do in\u00edcio da ponte. Mas ele acha espa\u00e7o para correr na beirada da pista e cobre o 1\/7 restante enquanto a locomotiva cruza todos os 7\/7 (a ponte inteira) passando por ele. Como ele corre a 20 km\/h e o trem percorre uma dist\u00e2ncia sete vezes maior no mesmo tempo, conclu\u00edmos que o trem viaja a uma velocidade 7 vezes maior do que a do corredor, o que d\u00e1 140 km\/h.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>E ent\u00e3o, o que houve com o sujeito que estava em nossa ponte ferrovi\u00e1ria? Voc\u00ea j\u00e1 deve saber que ele saiu ileso do encontro com o trem, mas qual era, afinal, a velocidade da locomotiva? Eu pensei que esse enigma iria durar pelo menos uma semana, mas o Bruno j\u00e1 matou a charada! A solu\u00e7\u00e3o [&hellip;]<\/p>\n","protected":false},"author":486,"featured_media":2761,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"material-hide-sections":[],"pgc_sgb_lightbox_settings":"","_vp_format_video_url":"","_vp_image_focal_point":[],"footnotes":""},"categories":[152],"tags":[],"class_list":["post-2742","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-geral"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Numa velocidade\u2026 - hypercubic<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.blogs.unicamp.br\/hypercubic\/2012\/05\/numa-velocidade\/\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Renato Pincelli\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minuto\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.blogs.unicamp.br\\\/hypercubic\\\/2012\\\/05\\\/numa-velocidade\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.blogs.unicamp.br\\\/hypercubic\\\/2012\\\/05\\\/numa-velocidade\\\/\"},\"author\":{\"name\":\"Renato Pincelli\",\"@id\":\"https:\\\/\\\/www.blogs.unicamp.br\\\/hypercubic\\\/#\\\/schema\\\/person\\\/c7be1e2811d061a75d3b4f4960eb53bd\"},\"headline\":\"Numa velocidade\u2026\",\"datePublished\":\"2012-05-08T01:00:54+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.blogs.unicamp.br\\\/hypercubic\\\/2012\\\/05\\\/numa-velocidade\\\/\"},\"wordCount\":188,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.blogs.unicamp.br\\\/hypercubic\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.blogs.unicamp.br\\\/hypercubic\\\/2012\\\/05\\\/numa-velocidade\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.blogs.unicamp.br\\\/hypercubic\\\/wp-content\\\/uploads\\\/sites\\\/249\\\/2012\\\/05\\\/trestleC_thumb11.jpg\",\"articleSection\":[\"Geral\"],\"inLanguage\":\"pt-BR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.blogs.unicamp.br\\\/hypercubic\\\/2012\\\/05\\\/numa-velocidade\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.blogs.unicamp.br\\\/hypercubic\\\/2012\\\/05\\\/numa-velocidade\\\/\",\"url\":\"https:\\\/\\\/www.blogs.unicamp.br\\\/hypercubic\\\/2012\\\/05\\\/numa-velocidade\\\/\",\"name\":\"Numa velocidade\u2026 - 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