| A | B |
|---|
| acceleration | any change in the speed or direction of an object's motion |
| force | a pull or push of any kind |
| friction | a force that resists motion between objects that are in contract |
| gravity | the force attraction between Earth and other objects |
| inertia | the property of matter that keeps an object at rest or keeps it moving in a straight line |
| motion | a change of position of an object |
| position | the location of an object |
| speed | the measure of an object's change in position during a unit of time |
| velocity | the measure of speed and direction of an object's motion |
| weight | a measure of the gravitational force acting on an object |
