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一、牛顿第一定律【知识要点】 1.牛顿第一定律的内容:一切物体在没有受到外力作用的时候,总保持静止状态或匀速直线运动状态.这一定律是在伽利略实验的基础上,经过科学推理而得出来的. 2.物体的运动不需要力来维持.
First, the Newton’s first law [knowledge points] 1. Newton’s first law of the content: all objects in the absence of external force when the total remained at rest or uniform linear motion This law is based on the Galileo experiment, Derived from scientific reasoning 2. The movement of objects does not require force to maintain.