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功率是功與做這些功所需時間的比值,物理意義是組織時間內做功的多少,描述做功的快慢.按定義,p=W/t,而W=Fs,又v=s/t,所以P=Fv.那麼式子中的F是物體所受的外力,v是速度,意為功率等於物體所受的力與速度的乘積.如果是在…
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