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Chapter 6 Motion
Chapter 6 Motion and Forces
| Question | Answer |
|---|---|
| average speed | divide the distance traveled by the time it takes to travel this distance |
| rate | an expression, like 2 m/s |
| acceleration | the rate at which speed or direction changes |
| gravity | the attraction between all matter |
| force | a push or a pull |
| weight | the downward force of gravity |
| normal force | the upward force of the ground |
| balanced forces | the forces acting on an object cancel each other |
| inertia | a measure of an object's ability to stay at rest or to keep moving |
| mass | measures the quantity of matter |