| A | B |
|---|
| force | push or pull |
| unbalanced force | greater force wins |
| balanced force | pushing with equal force |
| balanced force | cancels each other out |
| velocity | displacement / time |
| displacement | distance from starting point to ending point in straight line |
| gravity | keeps things grounded |
| mass | amount of "stuff" things are made of |
| 1st law | book stays at rest until acted on by unbalanced force |
| 2nd law | object moves in direction of force |
| 3rd law | walking on floor |
| 3rd law | action-reaction |
| 1st law | object will stay in motion until acted upon by unbalanced force |
| friction | resistance of movement when force is applied to an object |
| sliding friction | resists objects sliding past each other |
| rolling friction | resists objects in a circular motion |
| static | keeps objects from moving when force is applied |
| inertia | resistance of an object to change its direction |
| speed | how fast or slow |
| acceleration | speed up or slow down |
