Meteortites typically travel between 12 and 25 miles per second.
Convert this range to miles per hour.


Also convert it to meters per second.

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In the 1930's, people thought the fastest bullet that would ever be shot came from a .22 caliber gun, at 4000 ft/sec.  Bigger bullets, like the ones that come out of a .30/06, are going slower, at around 2700 ft/sec.  Since then, scientists have found a "speed limit" for chemical driven bullets:  6000 ft/sec.
 Convert the three speeds mentioned into miles per hour.


Also convert them to meters per second.

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Scientists  have created  a gun that  uses magnets to shoot  projectiles at 20 kilometers per second.
Convert this speed to  miles/hour.


Also convert it  to Km/Hr.

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The speed of light is 300000000meters/sec.
Convert this to miles/hour.

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Blood traveling through your aorta moves about .4meters/sec.  
Convert to ft/sec.


Also convert to mi/hr.

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 SOME OF THE ABOVE INFO CAME FROM THE FOLLOWING SOURCES:
http://karws.gso.uri.edu/JFK/scientific_topics/wound_ballistics/How_a_high-speed.html
http://www.gi.alaska.edu/ScienceForum/ASF10/1097.html
http://www.sandia.gov/media/NewsRel/NR2001/flyer.htm
http://physics.mtsu.edu/~phys2010/Lectures/L18_-_L23/L20/Ex_20_1/Soln_20_1/soln_20_1.html