Chap. 18: Motion and Momentum
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Created by:
irishlover17 on February 2, 2012
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9 terms
Terms | Definitions |
|---|---|
 Speed | the distance an object travels in a unit of time |
| Average Speed | found by dividing the total distance traveled by the total time taken |
| Instantaneous Speed | the speed of an object at one instant of time |
| Velocity | the speed of an object and the direction of its motion |
| Acceleration | the change in velocity divided by the time it takes for the change to occur |
| Mass | the amount of matter in an object |
| Inertia | the tendency of an object to resist a change in its motion |
| Momentum | the measure of how hard it is to stop an object |
| Law of conservation of momentum | the total momentum of a group of objects remains constant unless an outside forces act on the group |
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