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範例:平均速率

某人由甲鎮欲至乙鎮，先以v之速率行全程的1/3，欲使全程之平均速率為2v，則其餘路程之速率為若干?
[方法一]

 

[方法二]

 
[以powercam player 瀏覽]

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Posted in 位移與速度.

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By admin – 2010 年 07 月 29 日

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