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範例:牛頓第二運動定律與動量(瞬間)

某物體作直線運動,其質量與時間關係為m(t)=10-2t kg,速度與時間關係式為v(t)=t2+2 m/s求(1)在t=0~2sec間之平均外力(2)在t=2sec時,物體之動量及所受之外力。(3)物體所受之最大之外力。


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Posted in 牛頓第二運動定律.

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By admin – 2010 年 10 月 26 日

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