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在光滑水平面上,質量m的物體原以vo向東運動,受到一恆向北的力作用,此力隨著時間而變的關係為F=kt,k為常數,則最初t秒內,力對物體作功若干?
[詳解]
Posted in 動能與功能定理.
Tagged with 功能定理, 衝量定理, 變力作用.
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By admin – 2009 年 03 月 25 日
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