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根據牛二定律,可以得出拋物的軌跡是二次函數! 定律內容:物體的加速度跟物體所受的合外力F成正比,跟物體的質量成反比,加速度的方向跟合外力的方向相同.而以物理學的觀點來看, 牛頓運動第二定律 亦可以表述為“物體隨時間變化之動量變化率和所受外力之和成正比”.即動量對時間的一階導數等於外力之和.
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