| A | B |
|---|
| scalar | physical quantitiy with magnitude only |
| vector | physical quantity with magnitude and direction |
| displacement | the straight-line distance from starting point to ending point |
| velocity | the rate of change of displacement with respect to time |
| speed | the rate of change of distance with respect to time |
| distance | the actual physical amount traveled |
| acceleration | the rate of change of velocity with respect to time |
| "dropped" | initial speed = zero |
| acceleration of an object in the air | -9.8 m/s2 |
| speed of an object at its maximum height | zero |
| acceleration of an object at its maximum height | -9.8 m/s2 |
| "deceleration" | acceleration is negative |
| "thrown down" | initial velocity is negative |
| "thrown up" | initial velocity is positive |
| "falls down" | delta y is negative |
