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If you want to understand how any object moves or motion of object, for example a car on the freeway, a soccer ball being kicked towards the goal or your dog chasing the neighbour’s cat, then you have to understand three basic ideas about what it means when something is moving. These three ideas describe different parts of exactly how an object moves. They are:
1. position or displacement which tells us exactly where the object is,
2. speed or velocity which tells us exactly how fast the object’s position is changing or more familiarly, how fast the object is moving, and
3. acceleration which tells us exactly how fast the object’s velocity is changing.
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the object is on state of movement is called motion
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