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Physics
| Question | Answer |
|---|---|
| Force | A push or pull that can change the motion of and 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 in the motion of the object |
| Net Force | The sum of all the forces on an object. |
| At rest | The state of an object when it is not in motion. |
| 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. |
| 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. |
| Friction | Force that opposes the motion of one surface across another. |
| Frame of Reference | A system that uses axes or background objects to measure the position or movement of an object. |
| Velocity | Measurement of speed and direction of an object. |
| Acceleration | The rate of change in an object's speed. |