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WHAT IS ACCELERATION When an object gets faster, it ACCELERATES. In the picture, the car is shown for each second. The speed of the car is also shown. The car's speed is increasing steadily. It is call constant acceleration.
We define that acceleration as the increasing in speed each periods of time. However, we'll use a more correct definition later on. In this case, the car accelerates at 2 meters per second (How fast the care is moving) per second (In one second). And the correct way to say it is 2 meters per second per second STRANGE UNIT The unit for acceleration is fairly strange. It is in this case, meter per second per second. 2 meters per second per second seems strange, but when you really think about it, it would become more clear. It increases certain "speed" per second. Since the unit for speed is meters per second, therefore, "meters per second" per second would be a correct way of saying it increases certain speed every certain time interval. WORKING WITH ACCELERATION By looking at the picture. Suppose you had only the first and the last position shown. You can still work out the acceleration. The speed increases by 6 meters per second in 3 seconds. Therefore, in 1 second, it would increase by 2 meters per second.
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[Introduction] [Straight-Line Motion] [Speed] [Velocity] [Acceleration] [Circular Motion]
[Satellites] [Force] [Gravitation] [Inertia] [Newton's Law] [Momentum] [Mass and Weight]
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