science chapter 9
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Created by:
kenziegirl on May 2, 2010
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9 terms
Terms | Definitions |
|---|---|
 Acceleration | The rate of change in velocity |
| Change in Velocity | Occurs when the speed of an object changes, or its direction of motion changes,or both. Final velocity minus initial velocity |
| Deceleration | Acceleration that is opposite to the direction of motion |
| Velocity-time Graph | This graph provides information about the object's velocity and acceleration |
| Constant acceleration | Velocity changing at a constant rate |
| Average acceleration | Average rate at which an object changes its velocity; shown by the slope of a velocity time graph |
| Gravity | Attractive force between two or more masses; causes objects to be pulled towards the centre of Earth |
| Air Resistance | A friction-like force the opposes the motion of objects that move through the air |
| Acceleration due to gravity | The value of acceleration due to gravity near the surface of the earth is -9.8m/s2 |
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