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範例:等速的獨立系統(二維)

在光滑水平桌面上,質量為1.0仟克的A,4.0/秒的速度向東撞到一靜止的B,撞後A球以3.0/秒的速率與原運動方向成90o角彈開,B球被撞後的速率為1.25/,(A)B球質量為2.0仟克(B)碰撞後B球之動量量值為5仟克./(C)質心速度為0.80/秒向東(D)A,B兩球之動量變化相等(E)碰撞後A球相對於系統質心的速度量值為4.0/秒。[83南一中][87北聯]


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Posted in 多質點系統的質心運動.

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