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unbalanced forces
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| Term | Definition |
|---|---|
| Force | A push or pull that can change the motion of an object |
| balanced Forces | Separate forces on an object that combined do not change the movement of the object. |
| unbalanced forces | Forces on an object that cause change in the motion of the object. |
| net Force | The sum of all the forces acting on an object |
| at rest | The state of an object when it is not in motion |
| speed | The rate of change of position (or distance traveled) with respect to time; units in which speed is measured are expressed as distance per time (example: meters per second). |
| direction | A straight path that an object can move along. |
| motion | The change in an object’s position with respect to time and in comparison to the position of other objects used as reference points. |
| friction | Force that opposes the motion of one surface across another |