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Forces & Motion
Chapter 1 Forces & Motion Vocabulary
Term | Definition |
---|---|
Position | an object's location |
Motion | a change in the position of an object |
Speed | the rate at which, or how fast, an object changes its position |
Constant Speed | speed that is steady, or stays the same |
Variable Speed | speed that changes |
Force | a push or a pull |
Friction | a contact force that opposes the motion of an object; can cause a moving object to slow down or to stop |
Balanced Forces | forces that work together and make no change in motion |
Unbalanced Forces | forces that cause an object at rest to move; can change the speed or direction of a moving object |
Magnetism | a noncontact force that pulls on, or attracts, metal objects containing iron |