| A | B |
|---|
| acceleration | the change in velocity per unit of time |
| average speed | total distance over total time |
| constant speed | the same speed over a period of time |
| distance | the length an object moves (meters) |
| equilibrium | to remain equal such as balanced force |
| inertia | an object at rest will remain at rest and an object in motion will remain in motion unless acted on by an outside force |
| motion | the movement of an object relative to a reference point |
| momentum | the mass of an object times its velocity |
| Newton's first law | law of inertia |
| Newton's second law | force equals mass times its acceleration |
| Newton's third law | for every action there is an equal and opposite reaction |
| Newton (not the cookie) | early scientist that began describing motion through his laws. Basic unit of force. |
| reference point | a fixed point that allows an observer to see motion |
| speed | the distance an object travels per unit of time |
| velocity | the speed and direction of an object. (Interchangeable with speed) |
