Whenever a body is moving, we state that it is in motion. For instance, if a girl is walking down the street from a park to her home, we will say that the girl is in motion. However, suppose that girl stops for 2 minutes on the way to buy candy.
If someone asks at that time if the girl is in motion, the answer will be ‘No’. This is to infer that the motion of a body depends on time. In physics, we state that motion is the change in the position of a body with regard to time.
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