ORDERS OF MAGNITUDE (SPEED)

To help compare different orders of magnitude, the following list describes various speed levels between 1.3 m/s and 3 m/s.

'List of orders of magnitude for speed'

Factor	Value (m/s)	Value (km/h)	Item
10-9	1.3	4.68	Average rate of the Moon receding from the Earth.
	0.3 to 3	1 to 1	Typical relative speed of continental drift
	4.8	1.7	Hair growth.
10-3	0.013	0.0468	Speed of a Garden snail [1].
10-1	0.28	1	1 km/hour
	0.447	1.609	1mph
100	1	3.6	1 m/second
	1–1.5	3.6–5.4	Average walking speed.
101	10.25	36.89	Average speed of sprinters Asafa Powell and Justin Gatlin during their world record 100 m sprints. (Top speed ~43 km/h)
	10.35	37.27	Average speed of sprinter Michael Johnson during his world record 200 m sprint. (Top speed ~41.75 km/h)
	11.80	42.48	Top speed of Donovan Bailey and Maurice Greene 1997 World Championship 100 meter sprint. (Top speed ~42.5 km/h)
	5–25	18–90	Speed of propagation for unmyelinated sensory neurons.
	25	90	Peak speed of a galloping horse.
	30	108	Typical speed of car (road), Cheetah—fastest of all terrestrial animals, Sailfish—fastest Fish. Speed of go-fast boat
	36	130	Land speed record for a human powered vehicle.
	40	144	Typical speed of a train.
	90	320	Typical speed of a high-speed train, a diving Peregrine Falcon—fastest bird.
	97.2	350	Maximum speed of an Enzo Ferrari
102	103	370	Speed of super torpedo VA-111 Shkval
	105.5	379.8	Maximum speed of a Ferrari F50 GT1
	113.3	407.4	Maximum speed of a Bugatti Veyron (fastest production car in the world).
	120	432	Speed of propagation for mammalian motor neurons.
	130	468	Wind speed of a tornado.
	150.6	539	Top speed of an internal combustion powered NHRA Top Fuel Dragster
	152.7	550	Speed of Transrapid.
	161	580	Speed of JR-Maglev in 2003.
	331.5	1,193.4	Speed of sound in air at sea level and 0°C.
	344.66	1,240.77	Max speed reached by the jet-propelled car ThrustSSC in 1997—Land speed record. [2]
	428	1,540.8	Max speed of Bell X-1.
	464	1,670	Speed of Earth's rotation at the equator.
	603	2,170.8	Speed of the Concorde airliner.
	975	3,510	Muzzle velocity of M16 rifle.
	981	3,532	SR-71 Blackbird, the fastest aircraft driven by a mechanical jet engine
103	2,000	7,200	Estimated speed of a thermal neutron
	2,019	7,268.4	Speed of the North American X-15 rocket plane.
	3,111	11,199.6	Speed of the X-43 rocket/scramjet plane.
	7,777	28,000	Propagation of the explosion in a detonating cord, typical speed of a satellite and the space Shuttle in low Earth orbit.
104	11,082	39,895	Speed of Apollo 10—High speed record for manned vehicle.
	11,200	40,320	Escape Velocity from Earth.
	12,900	46,440	Re-entry speed of return capsule for Stardust space probe—Fastest re-entry speed for man-made object.
	16,210	58,356	Escape speed from Earth by NASA ''New Horizons'' spacecraft—Fastest escape velocity.
	29,800	107,280	Speed of the Earth in orbit around the Sun.
	70,220	252,792	Speed of the Helios 2 solar probe—Fastest man-made object.
Faster	200.000	700.000	Orbital speed of the solar system in the Milky Way galaxy.
	450.000	1,600.000	Typical speed of a particle of the solar wind, relative to the Sun.
	617,700	2,224,000	Escape velocity from the surface of the Sun.
	1,000,000	3,600,000	Typical speed of a Moreton wave across the surface of the Sun.
	10,000.000	36,000.000	Typical speed of a fast neutron.
	30,000.000	100,000.000	Typical speed of an electron in a cathode ray tube.
	124,000,000	447,000,000	Speed of light in a diamond (Refractive index 2.417).
200,000.000	720,000.000	Speed of a signal in a cable.
	299,792,458	1,079,252,848.8	Speed of light (or electromagnetic radiation) in vacuum (see the Speed of light).

'Some examples of speeds in m/s'

0.00275 m/s	world record speed of the fastest snail in the Congham, UK World snail racing championships.
0.080 m/s	the top speed of a sloth (= 8.0 cm/s)
1 m/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 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 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) travelling along myelinated axons in the spinal cord
336 m/s	the speed of sound in the Black Rock Desert when the land speed record was set in 1997
341 m/s	the current land speed record, which was set by ThrustSSC in 1997. This was supersonic (Mach 1.016) in the Black Rock Desert at the time, but might not have been supersonic in other places.
343 m/s	the approximate speed of sound under standard conditions, which varies according to air temperature
559 m/s	the average speed of Concorde's record Atlantic crossing (1996)
1000 m/s	the speed of a typical rifle bullet about the top speed of a sub-orbital spacecraft.
1400 m/s	the speed of the Space Shuttle when the solid rocket boosters separate.
4500 m/s	A typical value for the specific impulse of current rockets is 4.5 km/s.
8000 m/s	the speed of the Space Shuttle at main engine shutdown (just before it enters orbit).
299792458 m/s	the speed of light (exact value by definition of the metre)

'Examples of speeds in mph'

3 mph	Walking speed
15 mph	Bicycling speed
26.7 mph	Top speed of a running human (professional sprinter). (11.9 m/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
103 mph	Top speed (as of 2006) of a pitcher's fastball in baseball
180 mph	High-speed train
250–260 mph	Top speed of high performance supercars such as the Bugatti Veyron or the Koenigsegg CCX
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 a space shuttle
25,200 mph	Earth's escape velocity
670,616,629 mph	Speed of light

'Examples of speeds in km/h'

5 km/h	Walking speed
20 km/h	Easy bicycling speed
43 km/h	Top speed of a running human. (Asafa Powell's top speed over 100 m)
50 km/h	Residential speed limit Top speed of a running cat, or dog
80–90 km/h	Speed limit on a major road Top speed of an antelope
100–120 km/h	Highway or motorway speed Top speed of a cheetah
300 km/h	High-speed train
400–420 km/h	Top speed of high performance supercars such as the Bugatti Veyron or the Koenigsegg CCX
1,000 km/h	Airliner cruising speed
1,200 km/h	The approximate speed of sound (at sea level)
1,228 km/h	Current world land speed record
26,000 km/h	Re-entry speed of the space shuttle
40,320 km/h	Earth's escape velocity
1,079,252,848.8 km/h	Speed of light (exact)