How Fast Can Usain Bolt Run?

Usain bolt wins the 100m race

From his record time of 9.58 s for the 100 m sprint Usain Bolt’s average ground speed equates to: 37.58 km/h or 23.35 mph. However, once his reaction time of 0.15 s is subtracted, his time is closer to 9.43 s, making his average speed closer to 38.18 km/h or 23.72 mph. http://en.wikipedia.org/wiki/Usain_Bolt Incoming search…
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