试题与答案

一个物体在多个力的作用下处于静止状态，如果仅使其中一个力大小逐渐减小到零，然后又从零

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题型：单项选择题

题目：

一个物体在多个力的作用下处于静止状态，如果仅使其中一个力大小逐渐减小到零，然后又从零逐渐恢复到原来的大小（此力的方向始终未变），在此过程中其余各力均不变．那么，下列各图中能正确描述该过程中物体速度变化情况的是（）

A.

B.

C.

D.

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A

考点：高中物理Vt图像V
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