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> 如图所示，质量为2kg的物体A静止在光滑的水平面上，与水平方向成30º角的恒力F=3N作用于该物体，历时10s，则：（） A．力的冲量大小为零 B．力F对物体的冲量大小为30Ns C．力F对物体的冲量大小为15Ns D．物体动量的变化量为15Ns

问题：

发布时间：2020-03-13

如图所示，质量为2kg的物体A静止在光滑的水平面上，与水平方向成30º角的恒力F=3N作用于该物体，历时10s，则：（）

A．力的冲量大小为零

B．力F对物体的冲量大小为30Ns

C．力F对物体的冲量大小为15Ns

D．物体动量的变化量为15Ns

参考答案：

提问用户：5C***1ti

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如图所示，质量为2kg的物体A静止在光滑的水平面上，与水平方向成30º角的恒力F=3N作用于该物体，历时10s，则：（ ） A．力的冲量大小为零 B．力F对物体的冲量大小为30Ns C．力F对物体的冲量大小为15Ns D．物体动量的变化量为15Ns

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