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１．问：什么叫运动状态及其改变呢？答：运动物体速度的大小和方向叫物体的运动状态．运动物体速度值或方向改变叫运动状态改变．２．问：运动状态不发生改变的时候，物体怎样运动？答：物体做匀速直线运动或保持静止状态３．问：当物体仅受一个外力的时候，将如何呢？甲答：
1. Q: What is the state of exercise and its changes? A: The size and direction of the speed of a moving object is called the movement of the object. Changes in the speed or direction of a moving object change the state of motion. 2. Q: How does the object move when it does not change? A: The objects do a uniform linear motion or remain stationary. Q: What happens when an object is subjected to only one external force? A: