A \u00a0l’ \u00e0rea de pl\u00e0stica a partir de material reciclat ( tetrabrik, \u00a0globus, canya, pinxo de fusta, un parell de \u00a0taps d’ ampolla d’ aigua i un parell mes de garrafa) podem construir un cotxe \u00a0i adonar-nos \u00a0que un cos pot ser propulsat si t\u00e9 una for\u00e7a igual \u00a0en sentit contrari \u00a0que l’ impulsa. Aquest \u00e9s el principi d’ acci\u00f3 i reacci\u00f3, la tercera llei del sabi \u00a0matem\u00e0tic i f\u00edsic Newton.<\/p>\n
Podem comprovar que en deixar sortir l’ aire del globus el cotxe es despla\u00e7a en sentit contrari. Els cotxes \u00a0que hem fet , s\u00f3n molt xulos, n\u00b4hi ha tamb\u00e9 que s\u00f3n molt r\u00e0pids \u00a0i lleugers. A l’ hora de construir-los cal anar molt en compte en fer be els forats de les rodes i que els eixos quedin ben alineats.<\/p>\n
Aqu\u00ed us presentem diferents instant\u00e0nees \u00a0de les diferents curses.<\/p>\n
Un, dos tres, Ja!<\/p>\n
Cicle Superior<\/p>\n
<\/p>\n
https:\/\/www.youtube.com\/watch?v=qsJfomOeU2M<\/a><\/p>\n https:\/\/www.youtube.com\/watch?v=amdLRmT62Pc<\/a><\/p>\n <\/p>\n https:\/\/www.youtube.com\/watch?v=R-sjqfafCOc<\/a><\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" A \u00a0l’ \u00e0rea de pl\u00e0stica a partir de material reciclat ( tetrabrik, \u00a0globus, canya, pinxo de fusta, un parell de \u00a0taps d’ ampolla d’ aigua i un parell mes de garrafa) podem construir un cotxe \u00a0i adonar-nos \u00a0que un cos pot ser propulsat si t\u00e9… Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":3742,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[15,1,5,126],"tags":[76,114,141,79,17],"class_list":["post-3703","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-superior","category-general","category-primaria","category-e-verdes","tag-5e","tag-activitats-6e","tag-escoles-verdes","tag-mediambient","tag-plastica"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/esc-santgil\/wp-json\/wp\/v2\/posts\/3703","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/esc-santgil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/esc-santgil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-santgil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-santgil\/wp-json\/wp\/v2\/comments?post=3703"}],"version-history":[{"count":2,"href":"https:\/\/agora.xtec.cat\/esc-santgil\/wp-json\/wp\/v2\/posts\/3703\/revisions"}],"predecessor-version":[{"id":3705,"href":"https:\/\/agora.xtec.cat\/esc-santgil\/wp-json\/wp\/v2\/posts\/3703\/revisions\/3705"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-santgil\/wp-json\/wp\/v2\/media\/3742"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/esc-santgil\/wp-json\/wp\/v2\/media?parent=3703"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-santgil\/wp-json\/wp\/v2\/categories?post=3703"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/esc-santgil\/wp-json\/wp\/v2\/tags?post=3703"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}