某質點作等加速度直線運動,t秒內其速度由V變成-v/2,則此t 秒內質點平均速度與平均速率之比為何?
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某質點作等加速度直線運動,t秒內其速度由V變成-v/2,則此t 秒內質點平均速度與平均速率之比為何?
Posted in 位移與速度.
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By admin – 2010 年 08 月 03 日
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