| A | B |
|---|
| acceleration | any change in the speed or direction of a moving object over time. |
| friction | a force between surfaces that slows objects or stops them from moving |
| speed | the distance traveled in an amount of time |
| velocity | the speed and direction of a moving object |
| force | a push or a pull |
| inertia | the tendency of an object to remain in motion or to stay at rest unless acted upon by an outside force |
| gravity | a force of attraction, or pull, between objects |
| balanced forces | forces that cancel each other out when acting together on a single object |
| unbalanced forces | forces that do not cancel each other out when acting together on a single object |
| Newton | a metric unit for weight, measuring an amount of force |
| How do you determine the speed of a moving object? | Divide the distance by the time traveled |
| What force works against motion and causes things to stop? | Friction |
| What is force measured in? | Newtons |
| What is the difference between speed and velocity | Speed is just distance gone over an amount of time and velocity includes speed and the direction of motion. |
| How is force different when used to move a bowling ball vs. a tennis ball | A bowling ball weighs much more than a tennis ball, so it has move inertia. To make the bowling ball move as fast and change direction, a much greater force must be applied to the bowling ball than the tennis ball. |
