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Physics Review
Vocabulary for Science
| Question | Answer |
|---|---|
| velocity | an object's speed with direction |
| motion | a change of position |
| speed | distance divided by time it took for motion to occur (= distance/time) |
| energy | the ability to do work |
| acceleration | change in velocity (speed or direction or both) |
| force | force or a pull; the cause of a change in motion |
| net force | the sum (+) or difference (-) of all the forces acting on an object |
| unbalanced force | combined forces create a net force greater than zero (object moves) |
| balanced force | combined forces createa net force of zero (object does not move) |
| friction | a force that resists the movement of an object |
| inertia | an object's resistance to a change in motion |
| work | force x distance how much force does it take to move an object? |
| gravity | the force of attraction between any two objects |
| kinetic energy | energy of a moving object |
| potential energy | stored energy (object is not moving) |
Created by:
mharlan
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