| A | B |
|---|
| Reference point | A place or object used for comparison to determine if something is in motion. |
| Speed | indicates how fast an object is going (distance/time) |
| Velocity | speed in a given direction |
| Slope | slant or steepness of a line graph. |
| Acceleration | rate at which velocity changes; which means an object may speed up, slow down, or change directions. |
| Force | push or pull on an object |
| Unbalanced force | One force is stronger than another and will cause a change in an objects motion. |
| Balanced force | two forces are equal yet opposite and will NOT cause a change in an objects motion. |
| Momentum | Mass x velocity |
| Inertia/Newtons 1st Law | Objects at rest will stay at rest and objects in motion will stay in motion unless acted upon by an unbalanced force. |
| Newtons 2nd Law | Force = mass x acceleration |
| Newtons 3rd Law | For every action there is an equal yet opposite reaction |
| Friction | A force that opposes motion |
| Air resistance | a specific type of friction that affects objects moving through the air. |
| Gravity | Force of attraction between all objects in the universe. The strength depends on the mass of objects and the distance between them |
