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The kilometre (SI symbol: km; / ˈ k ɪ l ə m iː t ər / or / k ɪ ˈ l ɒ m ə t ər /), spelt kilometer in American and Philippine English, is a unit of length in the International System of Units (SI), equal to one thousand metres (kilo-being the SI prefix for 1000).
kilogram-kilometre (kg⋅km), moving 1 kg of cargo a distance of 1 km;; tonne-kilometre or kilometre-tonne (t⋅km or km⋅t, also tkm or kmt), the transportation of one tonne over one kilometre; 1 tkm = 1,000 kgkm.
The 1000 metres, 1 kilometer run, or 1K run is an uncommon middle-distance running event in track and field competitions. It consists of two and a half laps around an outdoor 400 m track, or five laps around an indoor 200 m track.
1 km – diameter of 1620 Geographos; 1 km – very approximate size of the smallest-known moons of Jupiter; 1.4 km – diameter of Dactyl, the first confirmed asteroid moon; 4.8 km – diameter of 5535 Annefrank, an inner belt asteroid; 5 km – diameter of 3753 Cruithne; 5 km – length of PSR B1257+12
This list includes only completed suspension bridges that carry automobiles or trains that are between 500 m (1,600 ft) to 1,000 m (3,300 ft) long in main span. It does not include cable-stayed bridges, footbridges , or pipeline bridges .
An MGRS grid reference is a point reference system. When the term 'grid square' is used, it can refer to a square with a side length of 10 km (6 mi), 1 km, 100 m (328 ft), 10 m or 1 m, depending on the precision of the coordinates provided.
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.
In Japan, the standard measure for walking distance is 80 meters for 1 minute of walking time. It is the standard used in real estate listings. It is the standard used in real estate listings. For example, if a building is a 10-minute walk from a particular park or train station, it is 800 meters away.