| A | B |
|---|
| motion | the state in which one's object distance from another is changing |
| meter | the basic SI unit of length |
| reference point | a piece or an object used for comparison to determine if an object is in motion |
| acceleration | the rate at which velocity changes |
| average speed | the overall rate of speed at which an object moves: calculated by dividing the total distance an object travels by the total time |
| speed | the distance an object travels per unit of time |
| velocity | speed in a given direction |
| slope | the steepness of a line on a greaph, equal to its vertical change divided by its horizontal change |
| instantaneous speed | MOM:) - okay, the speed of an object at one instant of time |
| international system of units | the system of units (SI) used by scientists to measure the properties of matter |
