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force of matter
s8p3.a
| Term | Definition |
|---|---|
| force | a push or pull exerted on an object in order to change the motion of the object;force has size |
| motion | an object's change in position relative to reference point |
| reference point | a stationary object that is used to describe an object's motion |
| speed | the distance traveled divided by the time interval during which motion occurred |
| velocity | the speed of an object in a particular direction |
| acceleration | the rate at which velocity changes over time;accelerates if its speed,direction,or both change |