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应用动量守恒定律计算现代火箭的飞行速度,选择不同参考系得出火箭的速度是一致的。虽然物体的动量对不同的惯性系是不同的。但是,动量守恒定律对于一切惯性系都是成立的。原因是动量守恒定律对伽利略变换具有对称性。
Applying the Law of Conservation of Momentum to Calculate the Flying Speed of Modern Rockets, Choosing Different Reference Systems to Obtain the Speed of Rockets Is Consistent. Although the momentum of an object is different for different inertial systems. However, the law of conservation of momentum holds true for all inertial systems. The reason is that the law of conservation of momentum has a symmetry to the Galilean transformation.