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motion and forces
| term | definition |
|---|---|
| position | describes the location of an object |
| reference point | is a location to which you compare other locations |
| motion | is the change in position over time |
| speed | the speed of an object is a measure of how far something moves in a given time |
| vector | is a quantity that has both size and direction |
| velocity | speed in a specific direction |
| acceleration | is a rate at which velocity changes |
| centripetal | acceleration in a circle motion |
| force | simply a push or a pull |
| net force | the combination of all forces acting on an object |
| inertia | is the tendency of all objects to resist a change in motion |
| gravity | is a force of attention between objects due to mass |
| free fall | |
| orbit |