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範例:牛頓第二運動定律與浮力

氣球載有沙包2包時,以加速度a上升。載有沙包6包時,以加速度a下降。若不計氣球本身重及沙包之浮力,則欲其不升降時,應載沙包(A)3包(B)4包(C)5包(D)0包。[66夜大]


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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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