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200 m hurdles (bend) 22.55 WB: Laurent Ottoz Italy: 31 May 1995 Milan, Italy 22.5 h: Martin Lauer West Germany: 7 July 1959 Zürich, Switzerland 100,000 m (track) 6:10:20 Don Ritchie Great Britain 28 October 1978 London, United Kingdom 200 m hurdles (straight) 22.10 (+2.0 m/s) WB: Andy Turner Great Britain: 15 May 2011 Manchester City Games
SI, and hence the use of "km/h" (or "km h −1 " or "km·h −1 ") has now been adopted around the world in many areas related to health and safety [36] and in metrology [37] in addition to the SI unit metres per second ("m/s", "m s −1 " or "m·s −1 "). SI is also the preferred system of measure in academia and in education.
= 5.08 × 10 −3 m/s: foot per second: fps ≡ 1 ft/s = 3.048 × 10 −1 m/s: furlong per fortnight: ≡ furlong/fortnight ≈ 1.663 095 × 10 −4 m/s: inch per hour: iph ≡ 1 in/h = 7.0 5 × 10 −6 m/s inch per minute: ipm ≡ 1 in/min = 4.2 3 × 10 −4 m/s inch per second: ips ≡ 1 in/s = 2.54 × 10 −2 m/s: kilometre per hour: km/h ...
At the 2021 Prefontaine Classic, Thompson-Herah set another 100 m personal best, Jamaican and Diamond League record of 10.54 s, becoming the first woman to break the 40 km/h barrier, then ran times of 10.64 s and 10.65 s.
An Olympic double of 200 m and 400 m was first achieved by Valerie Brisco-Hooks in 1984, and later by Michael Johnson from the United States and Marie-José Pérec of France both in 1996. Usain Bolt is the only man to repeat as Olympic champion, Bärbel Wöckel (née Eckert), Veronica Campbell-Brown and Elaine Thompson-Herah are the three women ...
km/s: Specific impulse: km/d: km/d: 1.1574074074074074e-2: kilometre per day: kilometres per day: kilometer per day: kilometers per day: mi/d: Orders of magnitude (speed) km/h: km/h: 10/36: kilometre per hour: kilometres per hour: kilometer per hour: kilometers per hour: mph: Kilometres per hour: km/s: km/s: 1000: kilometre per second ...
18 years, 211 days [3] [4] 200 m: 19.69 (−0.3 m/s) Erriyon Knighton United States 26 June 2022 USA Championships: Eugene, United States 18 years, 148 days [5] 19.49 (+1.4 m/s) Erriyon Knighton United States 30 April 2022 LSU Invitational Baton Rouge, United States 18 years, 91 days [6] 300 m: 31.61 Clarence Munyai South Africa 28 June 2017
In the 200 m, he reached the final and ran a new season's best time of 20.01 seconds to win, improving on his prior best time by 0.34 seconds. [ 68 ] With the heats of the World Championships 4×100 m relay scheduled during the same session as the final of the 200 m , De Grasse opted not to participate in the heats.