试题与答案

一块质量为0.3kg的木块以速度v0在光滑水平面上运动,一个1.8N的力与运动方

题型:计算题

题目:

一块质量为0.3kg的木块以速度v0在光滑水平面上运动,一个1.8N的力与运动方向相反作用木块上.从这个力作用在木块上时算起,木块移动9.0m的时候,木块的速度减到原来的一半,求这段运动所用的时间是多少?

答案:

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