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範例:摩擦力與功能定理[93指考]

質量M 的木塊在水平地面上以初速度vo滑出。已知木塊與地面間的動摩擦係數為μk,回答下列各問題。1.若木塊滑行一段距離S1 後,速度變成vo/2,求S12.試問木塊滑行多少時間(以符號t1 表示)後,速度由vo 變成vo/23.當木塊的速度變成vo/2的瞬間,有一質量為m 的物體從木塊的正上方以接近零的速度落下,如圖所示,並和木塊黏在一起。試問這兩個物體可繼續滑行多遠(以符號S2 表示)後才停住? [93指定考]

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Posted in 動能與功能定理, 歷屆物理考題.

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