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动量定理

> 质量为 m 1="2" kg， m 2="5" kg的两静止小车压缩一条轻弹簧后放在光滑的水平面上，放手后把小车弹开．今测得 m 2受到的冲量是10 N·s，则在此过程中， m 1的动量的变化量是 A．2 kg·m/s B．－2 kg·m/s C．10 kg·m/s D．－10 kg·m/s

问题：

发布时间：2024-09-11

质量为 m ₁="2" kg， m ₂="5" kg的两静止小车压缩一条轻弹簧后放在光滑的水平面上，放手后把小车弹开．今测得 m ₂受到的冲量是10 N·s，则在此过程中， m ₁的动量的变化量是

A．2 kg·m/s

B．－2 kg·m/s

C．10 kg·m/s

D．－10 kg·m/s

参考答案：

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