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动量定理

> 质量M的平板车，上面站一个质量为m的人，车以v 0的速度在光滑水面上向右前进，如图所示．当人相对于地以v向后水平跳出，则人跳车前后车的动量变化方向是______，车速变化的大小为______．

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发布时间：2024-09-13

质量M的平板车，上面站一个质量为m的人，车以v ₀的速度在光滑水面上向右前进，如图所示．当人相对于地以v向后水平跳出，则人跳车前后车的动量变化方向是，车速变化的大小为．

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