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範例:碰撞型的獨立系統(二)–觀念題

兩物體A、B發生迎面碰撞,碰撞後A、B都朝A原來移動的相反方向運動。下列推論何者正確? (A)B的質量一定比A大 (B)碰撞前A的速度大小一定比B的速度大小為小 (C)碰撞前B的動量大小一定比A大 (D)碰撞前B的動能大小一定比A大　(E)碰撞前、後A、B的總動量恆為一定值且必不為零。[85推甄類似題]
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Posted in 多質點系統的質心運動.

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By admin – 2009 年 01 月 10 日

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