| A | B |
|---|
| Force | to push or pull an object |
| Mass | how much matter is present in an object |
| Motion | a change in position |
| Friction | the force that slows and eventually stops an obejct in motion |
| Acceleration | how quickly or slowly an object changes its velocity |
| Newton | the unit of force |
| Balanced Forces | when equal forces are exerted on an object resulting in no change in motion |
| Speed | the rate at which an object moves; distance divided by time |
| Inertia | the resistance of an object to any change in its motion |
| Velocity | the speed and direction of a moving object |
| Weight | the measurement of the force of gravity on an object |
| Net Force | the total of all forces acting on an object or system |
| Unbalanced Forces | when unequal forces are exerted on an object from opposite directions resulting in a change in motion |
| Gravity | the force that keeps all objects on Earth |
| Frame of Reference | the stationary object or background that is use to determine motion |
