Correction for the speed of Michael Phelps
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How fast is 510,000 centimeters per hour?
It's about three-fourths as fast as Michael Phelps
The speed of Michael Phelps is about 699,300 centimeters per hour.
(at the Beijing Olympics, 2008; 200 m freestyle) (a.k.a. Michael Fred Phelps) (swimmer; 1985-)
Setting a world record, Michael Phelps swam the 200 m freestyle in 1:42.96 for an average speed of 699,300 centimeters per hour. Phelps would go on to win nine gold medals individually in the 2008 Olympics - more than all but eight of the competing nations.