click below
click below
Normal Size Small Size show me how
motion and forces
unit 1, lesson 1-4
| Term | Definition |
|---|---|
| position | describes the location of an object |
| reference point | is a location to which you compare other locations |
| motion | is a change in position over time |
| speed | of an object is a measure of how far something moves in a given amount of time |
| vector | is a quantity that has both size and direction |
| velocity | is a speed in a specific direction |
| acceleration | is the rate at which velocity changes |
| centripetal acceleration | acceleration in a circular motion |
| force | a push or pull |
| net force | the combination if all the forces acting on an object |
| inertia | the tendency of all objects t resist a change in motion |
| gravity | a force if attraction between objects due to their mass |
| free fall | when gravity is pulling it down and no other forces are acting on it |
| orbit | when it travels around another object in space |