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The average human has an almost-equal ratio of fast-twitch to slow-twitch fibers, but top sprinters may have as much as 80% fast-twitch fibers, while top long-distance runners may have only 20%. [1] This ratio is believed to have genetic origins, though some assert that it can be adjusted by muscle training. [2] "Speed camps" and "Speed ...
A speed record is a world record for speed by a person, animal, or vehicle. The function of speed record is to record the speed of moving animate objects such as humans, animals or vehicles. The function of speed record is to record the speed of moving animate objects such as humans, animals or vehicles.
[144] [145] With a top speed of 12.32 m/s(27.559 mph), it is the recorded fastest speed a human has ever ran. [146] Bolt addresses the press in the Mixed Zone at the 2009 IAAF World Championships. Although Gay withdrew from the second race of the competition, Bolt once again produced world record-breaking time in the 200 metres final.
The top speed of a sloth. 10 −1: ... Speed of Apollo 10 – high speed record for human-crewed vehicle. 11,200: 40,320: 25,100 0.00004: Escape velocity from Earth.
(Top) 1 Timeline. 2 Official records ... An air speed record is the highest airspeed attained by an aircraft of a ... Fastest unpowered descent of a human [69] [70] 7 ...
Land speed records by surface Category Speed (km/h) Speed (mph) Vehicle Operator Date Certifier Refs On ice: 335.7: 208.6: Audi RS 6: Janne Laitinen 9 Mar 2013 FIA [19] On the Moon: 18.0: 11.2: Apollo 17 Lunar Roving Vehicle (LRV‑003) Eugene Cernan: 11 Dec 1972 (unofficial) [20] On Mars: 0.18: 0.11: Mars Exploration Rovers Spirit and Opportunity
Footspeed, or sprint speed, is the maximum speed at which a human can run. It is affected by many factors, varies greatly throughout the population, and is important in athletics and many sports. Air resistance for top sprinters can take up to 5% of their energy. [85]
Dorothy Levitt, in a 19 kW (26 hp) Napier, at Brooklands, England, in 1908. The FIA does not recognize separate men's and women's land speed records, because the records are set using motorized vehicles, and not muscle-powered vehicles, so the gender of the driver does not matter; however, unofficial women's records have long been claimed, seemingly starting with Dorothy Levitt's 1906 record ...