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Unit 2
Unit 2 Forces and Motion
| Term | Definition |
|---|---|
| force | an interaction between masses; a push or pull |
| inertia | the property of mass that resists change of motion; large masses have a lot of this |
| balanced force | equal forces acting on one object in opposite directions |
| unbalanced force | unequal forces acting on an object causing motion |
| net force | the sum of all forces acting on each other |
| Newton | the unit used to measure force in the metric system |
| Law of Conservation of Energy (Conservation) | Energy can be changed from one form to another but not created or destroyed. |
| exert | to apply an effort or force |
| acceleration | a rate of change of velocity, to increase speed |
| speed | distance traveled per unit time. s=d/t |
| velocity | distance traveled per unit time with a direction |
| friction | two surfaces exerting forces on each other |
| gravity | a force that pulls objects toward each other |
| Newton's First Law | an object at rest will stay at rest, an object that is moving will stay moving unless disturbed by an unbalanced force. |
| Newton's Second Law | Force equals mass times acceleration |
| Newton's Third Law | For every action there is an equal and opposite reaction |
Created by:
woodallh
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