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kilometre (km) or kilometer is a metric unit used, outside the US, to measure the length of a journey; the international statute mile (mi) is used in the US; 1 mi = 1.609344 km; nautical mile is rarely used to derive units of transportation quantity.
A nautical mile is a unit of length used in air, marine, and space navigation, and for the definition of territorial waters. [2] [3] [4] Historically, it was defined as the meridian arc length corresponding to one minute ( 1 / 60 of a degree) of latitude at the equator, so that Earth's polar circumference is very near to 21,600 nautical miles (that is 60 minutes × 360 degrees).
mi. or mi, (rarely) m ... and to increase the number of feet per mile from the old Roman value. ... The international mile is precisely equal to 1.609 344 km ...
If measured using an interval of 125 mi (200 km), the coast of Great Britain has a length of about 1,500 mi (2,400 km). Using an interval of 30 mi (50 km), the length is about 2,100 mi (3,400 km).
On land, the league is most commonly defined as three miles (4.83 km), although the length of a mile could vary from place to place as well as depending on the era. At sea, a league is three nmi (3.452 mi; 5.556 km). English usage also included many of the other leagues mentioned below (for example, in discussing the Treaty of Tordesillas).
0.621 37 mi 1 093.6 yd 3 280.8 ft nautical units 0.539 96 nmi: The kilometre (SI symbol: km; / ˈ k ɪ l ə m iː t ər / ... Many other users, particularly in ...
It translates to an average speed of 15 miles per hour (24 km/h). [1] It is a standard of professional middle-distance runners in several cultures. The first four-minute mile is usually attributed to the English athlete Roger Bannister , who ran it in 1954 at age 25 in 3:59.4. [ 2 ]
1.136 36 mi SI units 1.828 80 km ... The speed of light is 299,792,458 metres per second (983,571,056 ft/s), or about one foot per nanosecond.