{"id":474,"date":"2019-11-04T09:03:34","date_gmt":"2019-11-04T07:03:34","guid":{"rendered":"https:\/\/blog.edu.turku.fi\/scienceed\/?p=474"},"modified":"2019-11-04T09:03:34","modified_gmt":"2019-11-04T07:03:34","slug":"friction","status":"publish","type":"post","link":"https:\/\/blog.edu.turku.fi\/scienceed\/2019\/11\/04\/friction\/","title":{"rendered":"Friction"},"content":{"rendered":"<p><strong>First experiment<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-472\" src=\"https:\/\/blog.edu.turku.fi\/scienceed\/files\/2019\/11\/gummiboll-284x300.gif\" alt=\"\" width=\"284\" height=\"300\" srcset=\"https:\/\/blog.edu.turku.fi\/scienceed\/files\/2019\/11\/gummiboll-284x300.gif 284w, https:\/\/blog.edu.turku.fi\/scienceed\/files\/2019\/11\/gummiboll-363x383.gif 363w\" sizes=\"auto, (max-width: 284px) 85vw, 284px\" \/><\/p>\n<ul>\n<li>Try spinning a smooth rubber ball in a bowl of water. What happens?<\/li>\n<li>Try the same with the tennis ball. What happens to it? Why?<\/li>\n<li><\/li>\n<\/ul>\n<p><strong>Second experiment:<\/strong><\/p>\n<ul>\n<li>Place two things on a cutting board in wood, for example a button and a eraser. Tilt the board a little.<br \/>\nWhat happened? Which object travels fastest? Why?<br \/>\nTry other things too.<\/li>\n<li>Repeat the same experiment with a metal or glass tray.<br \/>\nWhat happens? Why?<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>First experiment Try spinning a smooth rubber ball in a bowl of water. What happens? Try the same with the tennis ball. What happens to it? Why? Second experiment: Place two things on a cutting board in wood, for example a button and a eraser. Tilt the board a little. What happened? Which object travels &hellip; <a href=\"https:\/\/blog.edu.turku.fi\/scienceed\/2019\/11\/04\/friction\/\" class=\"more-link\">Forts\u00e4tt l\u00e4sa<span class=\"screen-reader-text\"> \u201dFriction\u201d<\/span><\/a><\/p>\n","protected":false},"author":2590,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30020],"tags":[],"class_list":["post-474","post","type-post","status-publish","format-standard","hentry","category-english"],"_links":{"self":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/474","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/users\/2590"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/comments?post=474"}],"version-history":[{"count":1,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/474\/revisions"}],"predecessor-version":[{"id":475,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/474\/revisions\/475"}],"wp:attachment":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/media?parent=474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/categories?post=474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/tags?post=474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}