| What is Motion? Section 1-3: Changes in Velocity |
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| A. Acceleration is the rate of change in velocity. 1. If something is accelerating it is: speeding up, slowing down, or changing directions. 2. Acceleration of an object is equal to its changes in velocity divided by the time during which the change occurs. Formula: ACCELERATION = FINAL VELOCITY - ORIGINAL VELOCVITY TIME 3. Acceleration has direction, just like velocity. 4. The unit used to measure acceleration is: meters / seconds / seconds (m / sec2) B. Deceleration is negative acceleration or when something slows down, the same label of the unit stays the same. C. Circular motion: When an object is in circular motion it is accelerating even though the speed may be constant because the direction is contiuously changing. |
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