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forces and motion
vocabuary
| Term | Definition |
|---|---|
| distance | the total change in position |
| displacement | the difference between the initial, or starting,position and the position |
| reference point | the point where the object starts |
| position | distance and direction from the reference point |
| motion | the process of changing and moving |
| speed | a measure of the distance an object travels in a given amount of time |
| velocity | the speed and the direction of a moving object |
| vector | a quantity that has both magnitude and direction |
| acceleration | a measure of the change in velocity during a period of time. |
| force | a push or a pull on a object |
| contact force | a push or a pull on one object by another object that is touching it. |
| newtons 2nd law | the acceleration of an object equalsnet force on the object divided by the objects mass |
| friction | a force that resists the sliding motion of two surfaces that are touching. |
| free body diagram | a simple model to understand systems of objects with any amount ofapplied forces. |
| net force | the sum of all the forces acting on an object. |
| newtons first law motion | that an object in motion will stay in motion |
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