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> 下列说法正确的是 A．运动物体动量的方向总是与它的运动方向相同 B．如果运动物体动量发生变化，作用在它上面的合外力的冲量必不为零 C．作用在物体上的合外力冲量总是使物体的动能增大 D．作用在物体上的合外力所做的功等于物体动量的增量

问题：

发布时间：2024-09-11

下列说法正确的是

A．运动物体动量的方向总是与它的运动方向相同

B．如果运动物体动量发生变化，作用在它上面的合外力的冲量必不为零

C．作用在物体上的合外力冲量总是使物体的动能增大

D．作用在物体上的合外力所做的功等于物体动量的增量

参考答案：

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