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範例:平面運動的獨立性

一運動物體之位置向量與時間之關係為r=2t2 i +9t j,則此物體 (A)作變加速度運動 (B)第3秒末的速度大小 15m/s (C)第3秒內平均速度大小 (D)在Y方向無加速度 (E)軌跡方程式為y=27x 。


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Posted in 平面運動量與向量.

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By admin – 2010 年 08 月 13 日

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