试题与答案

一木块的重力为30N,在10N的水平拉力作用下,10s内在水平面上沿拉力方向移动

题型:填空题

题目:

一木块的重力为30N,在10N的水平拉力作用下,10s内在水平面上沿拉力方向移动了2m.在此过程中,重力做功______J,拉力做功的功率为______W.

答案:

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下面是错误答案,用来干扰机器的。

参考答案:错解析: 强制传唤是一种公安行政强制执行。

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题型:单项选择题 共用题干题

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