| A | B |
|---|
| acceleration | rate of change in velocity |
| average speed | total distance divided by total time |
| force | a push or pull exerted on an object |
| friction | a force that opposes motion bettween surfaces |
| gravity | pulling force exerted by every object in the universe on every other object |
| inertia | tendency of an object to keep its motion |
| instantaneous speed | speed a point in time |
| speed | rate in change in position |
| velocity | rate of change in position or direction |
| weight | force of gravity on an object's mass |
| distance | lenght of a path between 2 points |
| displacement | the direction and distance from start to ending point |
| linear graph | graph which uses straight lines |
| nonlinear graph | graph which uses curved lines |
| frame of reference | used to describe motion relative to a stationary object. |
| relative motion | speed relative to another object |
| resultant vector | the vector sum of 2 or more vectors |
| free fall | movement towards Earth due to gravity |
| constant acceleration | a constant change in velocity or direction |
| vector | a quantity that has a direction associated with it |
