[請益] 為何會有功?功是如何定義的?(物理)
速度這個物理量似乎蠻容易理解的
而力則是由實驗定義來的
那功呢?為什麼會有功這個物理量?
它又是為什麼定義為力量與位移的乘積呢?
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討論串 (同標題文章)
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