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动量定理

> 在空间的某一点,将三个质量相等的小球A、B、C以相同的速率分别竖直上抛、竖直下抛和水平抛出,不计空气阻力,最后落在同一水平面上,则它们的（） A.触地速度大小相等 B.动量的增量大小相等 C.动量的增量Δp A>Δp B>Δp C D.动能的增量相等

问题：

发布时间：2020-03-13

在空间的某一点,将三个质量相等的小球A、B、C以相同的速率分别竖直上抛、竖直下抛和水平抛出,不计空气阻力,最后落在同一水平面上,则它们的（）
A.触地速度大小相等 B.动量的增量大小相等
C.动量的增量Δp _A>Δp _B>Δp _CD.动能的增量相等

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