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force and motion
|a force betwwen two surfaces rubbing against each other.
|a force that pulls objects towards each other.
|any push or pull on an object
|the distance an object travels in a given amount of time.
|any change in objects speed or direction when an object speeds up slows down srops or change direction
|a substance such as oil that coals surfaces that rub against each other . it reduces the amount of friction
|the speed and direction an object is moving
|a change in postion of an object
|the ledgendcy of a motionless object to remin motionless or the ledgency for an object in motion to stay in motion