直線運動~3題!!急~ - 運動
By Vanessa
at 2012-10-13T00:00
at 2012-10-13T00:00
Table of Contents
1.一火車以等加速度沿一直線軌道行駛,其前端通過A站時,速率為V1,火車前端1/4車長通過A站時速度為V2,則火車末端通過A站時速率為?2.一質點進行等加速度直線運動,第2秒內位移為5m,第4秒內位移為9m,則第6秒初的速度為多少m/s?3.一火車自甲站乙等加速度a1行駛全程的1/7,再以等速度行駛全程的5/7,�
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運動
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By Emily
at 2012-10-16T00:18
at 2012-10-16T00:18
By Catherine
at 2012-10-17T05:58
at 2012-10-17T05:58
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