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Acceleration

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Acceleration

1. 1. AccelerationGwen Nytes
2. 2. What Is Acceleration?• Acceleration – A measure of how quickly velocity is changing
3. 3. How Do You Measure Acceleration?• The equation for measuring acceleration is: ▫ Final velocity – initial velocity / time• If you’re driving in a car and you’re speed is increasing, it would be positive acceleration. If you’re slowing down or coming to a stop sign you’re speed is decreasing, so it would be negative acceleration• Example: Let’s say you start out traveling 45 mph. 32 minutes later, you’re speedometer reads 55 mph. ▫ You would figure it out by taking the final velocity, 55, minus the original velocity, 45. 55-45=10 Then you would take 10 and divide it by the time, 32. 10/32=.3125. This means that you accelerated .3125 miles per minute.
4. 4. Objective• Show a person’s acceleration as they roll down a hill. Calculate their acceleration from point to point.
5. 5. Materials• 4 volunteers• 3 stopwatches• Hill• Calculator• Meter stick (distance of hill)
6. 6. Precedure• Measure the distance of the hill• Set 3 points where 3 stopwatches are• Have someone roll down hill• Start timers when they start rolling• When person reaches each timer, stop the watch• Measure speed at each point• Measure acceleration from point to point
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