圓周運動作功問題 - 運動
By Edwina
at 2014-05-17T00:00
at 2014-05-17T00:00
Table of Contents
Q1:某人以一力推一物體作等速率圓周運動,推了一週後是有沒有作功?我知道施力平行速度方向,這應該有作功,但如果看位移繞一週不是為零……?希望高手可以給我詳解@@
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運動
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at 2014-05-20T03:27
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