| A | B |
|---|
| Speed | The rate in change in position |
| Instantaneous speed | The rate of motion at any given instant |
| Average Speed | The total distance traveled divided by the total time traveled |
| Velocity | Describes both speed and direction or an object |
| Acceleration | The rate in chage of velocity |
| Force | A push or a pull one body exerts on another |
| Balanced forces | Forces that are equal in size and opposite in direction |
| Net Forces | A force that always changes the velocity of an object |
| Inertia | The tendency of an object to resist any change in motion |
| Friction | A force that opposes motion between two surfaces that are touching each other |
| Gravity | A force exerted by every object in the universe. Gravitational force depends on mass and distance between objects |
| Weight | A measure of the force of gravity on an object. Measured in Newtons (N) |
| Constant speed | A speed that does not vary |
