https://peda.net/id/920d3028fdc 2017-02-28T17:42:54+02:00 https://peda.net/:static/548/peda.net.logo.bg.svg <div class="license">Tämän sivun lisenssi <a rel="license noopener" href="https://peda.net/info" target="_blank">Peda.net-yleislisenssi</a></div> https://peda.net/id/a69453b4fdc 2017-02-28T17:43:38+02:00 ​<iframe src="https://phet.colorado.edu/sims/html/gravity-force-lab/latest/gravity-force-lab_en.html" width="800" height="600" allowfullscreen="allowfullscreen"></iframe>​ 2017-02-28T17:43:29+02:00