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  2. Speed of light - Wikipedia

    en.wikipedia.org/wiki/Speed_of_Light

    kilometres per hour: 1 080 000 000: miles per second: 186 000: miles per hour [1] 671 000 000: astronomical units per day: 173 [Note 1] parsecs per year: 0.307 [Note 2] Approximate light signal travel times; Distance: Time: one foot: 1.0 ns: one metre: 3.3 ns: from geostationary orbit to Earth: 119 ms: the length of Earth's equator: 134 ms ...

  3. Miles per hour - Wikipedia

    en.wikipedia.org/wiki/Miles_per_hour

    Miles per hour (mph, m.p.h., MPH, or mi/h) is a British imperial and United States customary unit of speed expressing the number of miles travelled in one hour. It is used in the United Kingdom , the United States , and a number of smaller countries, most of which are UK or US territories, or have close historical ties with the UK or US.

  4. Kilometres per hour - Wikipedia

    en.wikipedia.org/wiki/Kilometres_per_hour

    Speed limit sign in the Republic of Ireland, using "km/h.". The SI representations, classified as symbols, are "km/h", "km h −1" and "km·h −1".Several other abbreviations of "kilometres per hour" have been used since the term was introduced and many are still in use today; for example, dictionaries list "kph", [3] [4] [5] "kmph" and "km/hr" [6] as English abbreviations.

  5. 1971 California 500 - Wikipedia

    en.wikipedia.org/wiki/1971_California_500

    Bobby Unser set a fast time early with an average speed of 182.066 mph. Recovering from his Thursday accident, Mark Donohue made his qualifying attempt late in the day. The Pocono 500 champion ran a four-lap average speed of 185.004 mph, with his first lap being a track record of 186.317 mph. The run gave Donohue the pole by a three mph margin ...

  6. TGV world speed record - Wikipedia

    en.wikipedia.org/wiki/TGV_world_speed_record

    These curves were built with larger superelevation than strictly necessary for revenue running at 300 km/h (186 mph). At kilometre 160, the line passes through the Vendôme TGV station . At kilometre 166, there is a long 2.5% downhill stretch into the Loir valley (the Loir is a tributary of the better-known Loire river) and the line crosses the ...

  7. 1980 CRC Chemicals 500 - Wikipedia

    en.wikipedia.org/wiki/1980_CRC_Chemicals_500

    Speeds for this race were: 116.024 miles per hour (186.723 km/h) as the average racing speed [8] and 137.583 miles per hour (221.418 km/h) for the pole position winner Cale Yarborough. [2] This would be one of the few races where Bobby Allison didn't win at the track that is now known as Dover International Speedway. [ 2 ]

  8. German submarine U-3514 - Wikipedia

    en.wikipedia.org/wiki/German_submarine_U-3514

    When running on silent motors the boat could operate at a speed of 6.1 knots (11.3 km/h; 7.0 mph). When submerged, the boat could operate at 5 knots (9.3 km/h; 5.8 mph) for 340 nautical miles (630 km; 390 mi); when surfaced, she could travel 15,500 nautical miles (28,700 km; 17,800 mi) at 10 knots (19 km/h; 12 mph). [ 4 ]

  9. MPH - Wikipedia

    en.wikipedia.org/wiki/MPH

    MPH or mph is a common abbreviation of miles per hour, a measurement of speed. MPH may also refer to: MPH, a 2014–2015 comic book series by Mark Millar and Duncan Fegredo; Make Poverty History, campaign to end poverty in Africa; Manlius Pebble Hill School, DeWitt, New York, US; Martinair's airline code; Master of Public Health, degree