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範例:自由落體與平均加速度

若一網球自4H的高度落至地面，反彈至H公尺的高度，若球與地面之接觸時間為t秒，則在接觸時的平均加速度為何? (重力加速度為g)

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Posted in 等加速度.

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By admin – 2010 年 08 月 09 日

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