Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
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When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
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A domestic cat can sprint at about 31 miles per hour.
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All GPS units sold in the civilian market have to be programmed to deactivate themselves if they detect they are travelling faster than 1200 MPH or are above 60,000 feet in altitude to prevent them being used in intercontinental ballistic missiles.
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Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
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Sound travels about 4 times faster in water than in air.
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The highest speed ever achieved on a bicycle was 167.04 mph by Fred Rompelberg in 1995.
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If a man could run as fast for his size as an ant can, he could run as fast as a racehorse.
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