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A widely quoted top speed figure of 71 mph (114 km/h) has been discredited due to lax and questionable methodology. [60] The highest speed reliably and rigorously measured in cheetahs in a straight line is 29 m/s (104 km/h), as an average of 3 runs over a 201.2-meter (220 yards) course (starting from start line already running). [61] [62]
Top speed reached by Bolt during the same race. 8–14: 30–50: 18–31: 2.7–4.7 × 10 −8: Typical residential speed limit; top speed of a running cat or dog. 14: 50: 31: 4.7 × 10 −8: Typical speed of road-race cyclist. 17: 60: 37: 5 × 10 −8: Typical speed of thoroughbred racehorse or racing greyhound. 5–25: 18–90: 11–56: 1.7 ...
The record is 44.72 km/h (27.78 mph), measured between meter 60 and meter 80 of the 100 meters sprint at the 2009 World Championships in Athletics by speed. [4] [5] (Bolt's average speed over the course of this race was 37.578 km/h or 23.35 mph.) [6] Compared to quadrupedal animals, humans are exceptionally capable of endurance, but incapable of great speed. [7]
The following is a list of fastest laps for the Indianapolis 500.The fastest lap statistic has been officially kept for the Indianapolis 500 since 1950. The honor is held in somewhat minor prestige, and typically a cash prize is awarded to the driver who accomplishes the feat.
Hull speed or displacement speed is the speed at which the wavelength of a vessel's bow wave is equal to the waterline length of the vessel. As boat speed increases from rest, the wavelength of the bow wave increases, and usually its crest-to-trough dimension (height) increases as well. When hull speed is exceeded, a vessel in displacement mode ...
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
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This top speed will be increased on a downgrade due to gravity assisting the motive power, and will be decreased on an upgrade due to gravity opposing the motive power. Tractive effort can be theoretically calculated from a locomotive's mechanical characteristics (e.g., steam pressure, weight, etc.), or by actual testing with strain sensors on ...