How fast is 0.04 kilometers per second?
It's about half as fast as a Porsche 911
The speed of a Porsche 911 is about 0.0914 kilometers per second.
(for Porsche 911 Type 997 GT2, 2007 model)
The Porsche 911 GT2 has a top speed of 0.0914 kilometers per second. It takes just 7.4 seconds for the GT2 to accelerate to 0.0447 kilometers per second.
It's about two-fifths as fast as The CRH (train)
The speed of The CRH (train) is about 0.097 kilometers per second.
(a.k.a. Hexie Hao, 和谐号, a.k.a. 和諧號, a.k.a. Héxié Hào, a.k.a. "Harmony")
The CRH-3 train which runs on China's Beijing-Tianjin Intercity Railway are capable of speeds up to 0.097 kilometers per second. Theses train can make the 120 km (74 mi) journey from Beijing to Tianjin in about 30 minutes.
It's about two-and-a-half times as fast as Secretariat
The speed of Secretariat is about 0.0168 kilometers per second.
(at Belmont Stakes, 1973)
Setting a record finish, Secretariat ran the Belmont Stakes — a 12 furlong race length — in 2:24, for an average speed of 0.0168 kilometers per second in 1973. His margin of victory in the race, also a record-setter, was 31 lengths.
It's about two-fifths as fast as a Peregrine Falcon
The speed of a Peregrine Falcon is about 0.1080 kilometers per second.
(a.k.a. Peregrine, a.k.a. Duck Hawk, Falco peregrinus)
The Peregrine Falcon can reach speeds of up to 0.1080 kilometers per second when diving. Falcons are sometimes sent to scare smaller birds away from airports to improve air traffic safety and were used in World War II to intercept carrier pigeons used by enemy forces.
It's about four times as fast as Michael Johnson
The speed of Michael Johnson is about 0.01035 kilometers per second.
(a.k.a. Michael Duane Johnson) (sprinter; 1967-) (at the Atlanta Olympics, 1996)
Setting a record that stood for 12 years, Michael Johnson ran a 200 m in 0:19.32 for an average speed of 0.01035 kilometers per second at the 1996 Olympics. Johnson was nicknamed "the Man with the Golden shoes" in recognition of the custom footwear worn during these races — a pair of Nikes with a left size of 10.5 and a right size of 11.
It's about four times as fast as Usain Bolt
The speed of Usain Bolt is about 0.0103 kilometers per second.
(at the Beijing Olympics, 2008) (a.k.a. Usain St. Leo Bolt, OJ, C.D.) (sprinter; 1986-)
Setting a world record, Usain Bolt ran a 100 m in 0:09.69 for an average speed of 0.0103 kilometers per second at the 2008 Olympics. Furthermore, Bolt's margin of record breaking — 0.03 s — is the largest margin of victory in the history of digital measurements.
It's about four-and-a-half times as fast as Flo-Jo
The speed of Flo-Jo is about 0.009372 kilometers per second.
(at the Seoul Olympics, 1998) (a.k.a. Florence Griffith-Joyner, a.k.a. Florence Delorez Griffith) (swimmer; 1959-1998)
Setting a world record in 1988, Flo-Jo ran a 200 m in 0:21.34 for an average speed of 0.009372 kilometers per second. Known as a 200 m runner, Joyner also set a record time in a 100 m race at in 1987.
It's about five-and-a-half times as fast as Noah Ngeny
The speed of Noah Ngeny is about 0.007578 kilometers per second.
(in Rieti, Italy; 1999) (sprinter; 1978-)
Setting a world record at the Rieti Grand Prix in 1999, Noah Ngeny ran 1,000 m in 2:11.96 for an average speed of 0.007578 kilometers per second. According to some reports, Ngeny did not begin running competitively until just three years before setting the record.
It's about six-and-a-half times as fast as a Bull
The speed of a Bull is about 0.0067 kilometers per second.
(for animals involved in the Running of the Bulls, a.k.a. Encierro, San Fermin, Pamplona, Spain) (herd average speed)
The herd of the annual Encierro in Pamplona, Spain runs at an average speed of 0.0067 kilometers per second. The Encierro is run annually from July 7th through July 14th and involves 42 bulls, 77 oxen, and an estimated 17,000 runners over the course of the event.
It's about one-tenth as fast as The Speed of Sound
The speed of The Speed of Sound is about 0.3430 kilometers per second.
(in dry air at 20°C)
The speed of sound in dry air at 20°C (68°F) is 0.3430 kilometers per second. Air is a relatively poor acoustic conductor, however, as sound will travel at speeds of between 1.50 kilometers per second to 1.560 kilometers per second in water, depending on its salinity.
It's about one-tenth as fast as a Bullet (Handgun)
The speed of a Bullet (Handgun) is about 0.3840 kilometers per second.
(for .40 Smith & Wesson 135 grain Sierra JHP, VV 3N37 powder, Fed. 100 primer, Remington case) (muzzle velocity)
A 0.40 caliber Smith & Wesson bullet has a muzzle a velocity of 0.3830 kilometers per second. This type of ammunition has been the standard issue round of the United States Federal Bureau of Investigation (FBI) since 1990.
It's about one-fifteenth as fast as a Jet Fighter
The speed of a Jet Fighter is about 0.670 kilometers per second.
(for Lockheed Martin F-16, a.k.a. Fighting Falcon, a.k.a. Viper) (maximum speed at altitude)
An F-16's maximum speed at altitude is approximately 0.670 kilometers per second. The F-16 has a flight ceiling of approximately 15 km (9.32 mi).
It's about sixteen times as fast as a Crocodile
The speed of a Crocodile is about 0.0027 kilometers per second.
(American Crocodile, Crocodylus acutus) (swimming speed)
An American crocodile can reach speeds in the water of up to 0.0028 kilometers per second. On land, larger crocodiles can "gallop" when fleeing danger at speeds of up to 0.0056 kilometers per second.
It's about twenty times as fast as Michael Phelps
The speed of Michael Phelps is about 0.0019425 kilometers per second.
(at the Beijing Olympics, 2008; 200 m freestyle) (a.k.a. Michael Fred Phelps) (swimmer; 1985-)
Setting a world record, Michael Phelps swam the 200 m freestyle in 1:42.96 for an average speed of 0.0019425 kilometers per second. Phelps would go on to win nine gold medals individually in the 2008 Olympics - more than all but eight of the competing nations.
It's about one-twentieth as fast as a Bullet (Rifle)
The speed of a Bullet (Rifle) is about 0.9150 kilometers per second.
(5.56 x 45 mm, a.k.a. 5.56 NATO)
A 5.56 x 45 mm cartridge is fired at a velocity of 0.9150 kilometers per second. As the NATO rifle cartridge, it is used by the military forces of more than thirty-one countries, including use in the M16 series, M4 Carbine, HK-416, and M249 Squad automatic weapons used by the United States armed forces.