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  Wikipedia: Speed

Wikipedia: Speed
Speed
From Wikipedia, the free encyclopedia.

For alternative meanings of Speed, see Speed (disambiguation).

Speed is the rate of motion expressed as distance moved per unit of time. Speed is a scalar quantity; the equivalent vector quantity is known as velocity.

Units of speed include:

1 m/s = 3.6 km/h
1 mph = 1.609 km/h
1 knot = 1.852 km/h = 0.514 m/s
Mach 1 = about 1200 km/h = about 330 m/s

  

From Wikipedia, the free encyclopedia. 
Modified by Geona