Metre per second

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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 × 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.