Usain Bolt ran the 2012 Olympic 100-meter race in 9.63 seconds. If he runs at this rate on a road with a speed limit of 25 miles per hour, how will his speed compare to the speed limit? Justify your answer. (25 mi/hr = 40,234 meters/hr)
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40.2 metre /hr = 11.176 m/s
speed of usain bolt = 100/9.63= 10.384m/S
since 11.176>10.384 so
Usain bolt is 11.176-10.384= 0.793m/s short of speed limit
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