| We will now look at an alternative approach to dynamics. While in Newton's viewpoint, we describe motion using forces and mass, in this viewpoint we work with energy and momentum. In this activity unit, you will perform virtual experiments with three different public domain physics simulations dealing with energy and momentum. Before you start answering the questions, play with each simulation. Get familiar with each of the different effects and buttons of the animations. Where there are tabs, utilize them.
| 我們現在將討論另一種動力學的分法，在牛頓的觀點中，我們使用力和質量來描述運動，而在這個觀點中，我們將使用能量和動量。在這個活動單元中，你將使用涉及能量和動量的三個不同的公共領域物理模擬執行虛擬實驗，在你開始作答問題前，玩玩看每個模擬實驗，熟悉動畫的每個不同效果和按鈕，並且利用所有的標籤。
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