Bolt set the world record for the 100 meter sprint in 2008 with a time of 9.72 seconds.
That's an average speed of 100/9.72 = 10.288 meters per second.
( 37.037 km per hour )
( 23.014 miles per hour )
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Roughly 10 meters a second. He has the world record of 9.49 seconds for the 100 meter dash.