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範例:鉛直拋體與相遇問題

一石自高為H之懸崖自由落下，同時自崖底以初速vo鉛直上拋一球，則：(1)若球之速度夠大，則二者在運動開始後多久相遇？(2)兩者在空中相遇的條件為何?(3)若要在球上升時之空中相遇，vo又受何限制？(4)若要在球下降時之空中相遇，vo又受何限制？(5)若相遇時，兩者速率相等，則相遇點的高度為何?

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Posted in 等加速度.

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By admin – 2010 年 08 月 10 日

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