The Metre per second reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Metre per second

Metres per second is an SI derived unit of speed (scalar) and velocity (vector), defined by distance in metres divided by time in secondss. The unit is given as m/s.

Some examples of speeds in m/s:

• 0.013 m/s = 1.3 cm/s -- speed of a garden snail crawling
• 0.08 m/s = 8.0 cm/s -- the top speed of a sloth
• 1m/s -- a typical human walking speed; below a speed of about 2 m/s, it is more efficient to walk than to run, but above that speed, it is more efficient to run
• 1 m/s -- the speed of signals (action potentials) traveling along axons in the human cortex
• 28 m/s -- a car travelling at 60 miles per hour (mi/h or informally mph) or 100 kilometres per hour (km/h); also the speed a cheetah can maintain
• 120 m/s -- the maximum speed of signals (action potentials) traveling along myelinated axons in the spinal cord
• 343 m/s -- approximately the speed of sound under standard conditions, which varies according to air temperature; the land speed record (set in 1997) is just 2 m/s less than this
• 559 m/s -- the average speed of Concorde's record Atlantic crossing (1996)
• 10³ m/s -- the speed of a typical rifle bullet
• 3 x 10⁸ m/s -- approximately the speed of light.

1 metre per second = 3.2808 feet per second = 2.2369 miles per hour = 3.6 km/h.

See also: Kilometres per hour.

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