You can put this solution on YOUR website! Carl Lewis, one of the great Olympian sprinters of this century can run 100 meters in 10 seconds. How fast is this in kilometers per hour?
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Here's one way:
Find his speed in meters per second:
100/10 = 10 m/s
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How many meters would he travel in one hour at that speed (3600 sec in 1 hr)
10 * 3600 = 36000 meters in one hr
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Change that to km/hr = 36 km/hr