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Miles per hour

From Academic Kids

Miles per hour is a unit of speed, expressing the number of international miles covered per hour. The common abbreviation in everyday use is mph, although mi/h, using the SI method of expressing derived units, is sometimes used, especially in the United States. The preferred SI unit for velocity is m/s, although km/h is often used as a replacement for mph.

1 mph is equal to:

Miles per hour is the unit used for speed limits on roads in the US and Britain.

Examples of speeds in mph

3 mph Walking speed
15 mph Bicycling speed
23 mph Top speed of a running human. (34 ft/s)
30 mph Residential speed limit
Top speed of a running cat, or dog
50–60 mph Speed limit on a major road
Top speed of an antelope
70 mph Highway or motorway speed
Top speed of a cheetah
180 mph High-speed train
625 mph Airliner cruising speed
761 mph The approximate speed of sound (at sea level)
763 mph Current world land speed record
16,250 mph Re-entry speed of the space shuttle
25,200 mph Earth's escape velocity
670,616,629 mph Speed of light

External links

pt:Milha por hora

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