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Speed; system unit code (alternative) symbol or abbrev. notes sample default conversion combinations SI: metre per second: m/s m/s US spelling: meter per second: 1.0 m/s (3.3 ft/s) m/s ft/s (m/s foot/s) non-SI metric: kilometre per hour: km/h km/h US spelling: kilometer per hour: 1.0 km/h (0.62 mph) km/h mph; Imperial & US customary: mile per ...
The preferred walking speed is the speed at which humans or animals choose to walk. Many people tend to walk at about 1.42 metres per second (5.1 km/h; 3.2 mph; 4.7 ft/s). Many people tend to walk at about 1.42 metres per second (5.1 km/h; 3.2 mph; 4.7 ft/s).
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.
The knot (/ n ɒ t /) is a unit of speed equal to one nautical mile per hour, exactly 1.852 km/h (approximately 1.151 mph or 0.514 m/s). [1] [2] The ISO standard symbol for the knot is kn. [3]
While the Greyhound is credited as being the fastest dog breed up to distances of around 800 metres (2,600 ft), the Saluki is thought to be faster over longer distances. In 1996, The Guinness Book of Records listed a Saluki as being the fastest dog, capable of reaching a speed of 68.8 km/h (42.8 mph). [17]
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Whippets are known as the fastest dogs of their weight class, capable of achieving speeds of up to 56 km/h (35 mph), [23] due to their ability to run in a double suspension gallop. [51] This distinctive gait, in which all four legs are off the ground twice during each stride—once when fully extended and again when tucked under the body ...