物理的直線運動很急!!!!!! - 運動
By Edward Lewis
at 2007-08-27T00:00
at 2007-08-27T00:00
Table of Contents
一物體質量為m,從一長24公尺的光滑斜面頂端由靜止下滑,經4秒到達斜面底部。今將此物體從斜面底部以初速v,沿斜面上滑,經6秒後又滑回斜面底部,則v為多少公尺/秒?Ans:9<需要詳解>
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運動
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By Hamiltion
at 2007-08-31T21:01
at 2007-08-31T21:01
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