| A | B |
|---|
| motion | A change in position with time |
| speed | Rate of change of position (d/t) |
| distance | The length between two points |
| reference point | Stationary object used to determine if motion has occurred (change in position) |
| displacement | A vector quantity - measure of the change in position: final position - initial position |
| vector | A measure that has magnitude and direction; represented by an arrow |
| average speed | total distance divided by total time |
| constant speed | where speed does not change; "cruise control" |
| instantaneous speed | speed at a particular point in time (look at the speedometer) |
| velocity | speed in a given direction |
| position | place/point determined relative to reference directions |
| slope | the change in "Y" divided by the change in "X" = rise/run |
| meter | metric unit of length measurement |
| kilometer | 1000 meters |
| centimeter | 1/100th of a meter; .01m |
| millimeter | 1/1000th of a meter; .001m |
| acceleration | a change in velocity and/or direction |
| independent variable | variable on the "X" axis: "cause" |
| dependent variable | variable on the "Y" axis: "effect" |
| horizontal line | on a distance (position)/time graph this would indicate no motion |
