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Chapter 5
motion, force, friction, gravity
| Term | Definition |
|---|---|
| motion | |
| speed | distance divided by time |
| average speed | total distance divided by time |
| instantaneous speed | the speed you are going right at that moment |
| velocity | speed and direction |
| acceleration | speeding up, slowing down, changing direction |
| force | push or pull on an object |
| Newton | SI unit for force |
| net force | |
| friction | |
| kinetic friction | |
| static friction | |
| gravity | |
| weight | |
| mass |