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範例:完全非彈性碰撞與地表附近重力位能[82日大]

一質量為m的子彈,以速度v水平射入一個放在光滑平面上的靜止木塊,木塊的質量為M,子彈射入木塊後嵌入其中。下列敘述何者正確?(A)碰撞前後,動量守恒(B)碰撞前後,動能守恒  (C)碰撞前後,總能量守恒  (D)嵌有子彈的木塊,其速度為mv/(m+M) (E)若木塊用一質量可忽略之輕繩吊著,則嵌有子彈的木塊上昇之高度為v2/2g(g為重力加速度)


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Posted in 一維空間的碰撞(二)非彈性碰撞, 歷屆物理考題.

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