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> 如图所示，两质量分别为m 1和m 2的弹性小球又叠放在一起，从高度为h处自由落下，且远大于两小球半径，所有的碰撞都是完全弹性碰撞，且都发生在竖直方向．已知m 2=3m 1，则小球m 1反弹后能达到的高度为（　　） A．h B．2h C．3h D．4h

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发布时间：2024-09-07

如图所示，两质量分别为m ₁和m ₂的弹性小球又叠放在一起，从高度为h处自由落下，且远大于两小球半径，所有的碰撞都是完全弹性碰撞，且都发生在竖直方向．已知m ₂=3m ₁，则小球m ₁反弹后能达到的高度为（　　）

A．h B．2h C．3h D．4h

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