In this activity unit, you will perform virtual experiments with three or four different public domain physics simulations dealing with force and motion. Before answering the questions, play with each simulation. Get familiar with the use of each of the settings, buttons, and tabs. | 在這個單元,你要使用三四個有關力與運動的模擬實驗,在你開始作答問題前,玩玩看每個模擬實驗,熟悉每個模擬實驗的操作,並利用這些模擬來回答問題。 |