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最佳答案：Knocking into players and falling down would be dangerous.
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最佳答案：The article aims to avoid the collision of boats and ships,and effectively contr
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最佳答案：The battery must be placed in the required position in the battery room when the
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最佳答案：U.S.film "CRASH",the performance of the United States is the racial,multi-cultur
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最佳答案：The collision of different cultures will inevitably impact on language,including
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最佳答案：Terribly sorry.We have checked and tested all samples before dispatch.They must
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最佳答案：After we were hearing the story,in a farther sense,A and B coming across stand f
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最佳答案：This is a city stood up from the rubble,in the intersection of fate,the modern a
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最佳答案：参考如下：It's unavoidable for baketball players to run into each other in a fierce m
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最佳答案：既然是翻译来的,那就很好理解了.我估计应改是对弹性碰撞的翻译不准确,这里应该是不完全弹性碰撞,有能量的损失,所以不能用动能守恒做,而用动量可得答案1.动量守恒和