檢視 Tracker自由落體的原始碼

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show=原始設計者;
show=負責人;
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===目的===
<img src='https://physlets.org/tracker/images/tracker_logo.png'>
===原理===
Tracker意思為追踪器，透過追蹤色點，來觀察物體的運行

===操作===
Tracker的基本功能

<img src='http://science4everyone.net/file/%E5%BC%B5%E9%88%9E%E7%A5%BA/1576127798547.jpg' height=500>

新增一個檔案

<img src='http://science4everyone.net/file/%E5%BC%B5%E9%88%9E%E7%A5%BA/tracker_%E5%B7%A5%E4%BD%9C%E5%8D%80%E5%9F%9F%201.jpg' height=500>

開啟事先拍好的影片

<img src='http://science4everyone.net/file/%E5%BC%B5%E9%88%9E%E7%A5%BA/tracker-02.jpg' height=500>

新增一個校正桿

<img src='http://science4everyone.net/file/%E5%BC%B5%E9%88%9E%E7%A5%BA/tracker-03.jpg' height=500>

<img src='http://science4everyone.net/file/%E5%BC%B5%E9%88%9E%E7%A5%BA/tracker-04.jpg' height=500>

<img src='http://science4everyone.net/file/%E5%BC%B5%E9%88%9E%E7%A5%BA/tracker-05.jpg' height=500>

<img src='http://science4everyone.net/file/%E5%BC%B5%E9%88%9E%E7%A5%BA/tracker-06.jpg' height=500>

<img src='http://science4everyone.net/file/%E5%BC%B5%E9%88%9E%E7%A5%BA/tracker-07.jpg' height=500>

<img src='http://science4everyone.net/file/%E5%BC%B5%E9%88%9E%E7%A5%BA/tracker-08.jpg' height=500>

<img src='http://science4everyone.net/file/%E5%BC%B5%E9%88%9E%E7%A5%BA/tracker-09.jpg' height=500>
在同樣高度下，物體掉落的速度，主要受空氣阻力的影響。

<img src='http://science4everyone.net/file/%E5%BC%B5%E5%8F%88%E6%87%BF/01%E7%89%A9%E8%B3%AA%E7%A7%91%E5%AD%B8/img/%E5%96%AE%E6%93%BA.jpg' height=200>

===情境短片===
下集
<videoflash>v1N-NGxwrdg</videoflash>

===探究問題===

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show=問題探究
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