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運動狀態跟物體的受力有關.你可以對物體進行受力分析.把所有的力在直角坐標系裏分解,1、如果收到的力都是豎直方向的那麼物體的運動軌跡肯定是豎直的直線;2、如果在水准方向上有力的作用那你還得考慮如果水平方向上…
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