
Kilometre per hour (American English: kilometer per hour) is a physical unit of both speed (scalar) and velocity (vector (spatial)). The correct SI symbol is km/h or km·h−1, although the unit is sometimes written colloquially as kph, kmph, or km/hr. None of these corruptions is correct under the rules of SI in reference to correct style when using symbols. It is often spoken and sometimes written as klicks or kays in slang usage. By definition, an object travelling at a speed of 1 km/h for an hour would move 1 kilometre. * 3.6 km/h ≡ 1 metre·second−1, the SI derived unit of speed, metre per second * 1 km/h ≈ 0.27778 m/s * 1 km/h ≈ 0.62137 miles per hour ≈ 0.91134 foot (unit of length) per second == Examples of speeds in km/h == {| border="1" cellpadding="4" cellspacing="0" |----- | align="right" | 5 km/h || Walking speed |----- | align="right" | 20 km/h || Easy bicycle speed |----- | align="right" | 36 km/h | Top speed of a running human. (100 m in 10 seconds) |----- | align="right" | 50 km/h | Residential speed limit
Top speed of a running cat, or dog |----- | align="right" | 80–90 km/h | Speed limit on a major road
Top speed of an antelope |----- | align="right" | 110–120 km/h | Highway or motorway speed
Top speed of a cheetah |----- | align="right" | 300 km/h | High-speed rail |----- | align="right" | 1,000 km/h || Airliner cruising speed |----- | align="right" | 1,200 km/h | The approximate speed of sound (at sea level) |----- | align="right" | 1,228 km/h || Current world land speed record |----- | align="right" | 26,000 km/h | Re-entry speed of the space shuttle |----- | align="right" | 40,320 km/h || Earth's escape velocity |----- | align="right" | 1,079,252,848.8 km/h || Speed of light (exact) |} == External links == *[http://www.ex.ac.uk/trol/scol/ccspeed.htm Conversion Calculator for Units of SPEED] Units of velocity
Should this page's name be changed to "Kilometres per hour"? User:Vancouverguy 22:45, 17 Sep 2003 (UTC) Why has someone changed the spelling from kilometre to kilometer. Kilometre with the "tre" is the standard worldwide spelling only Americans spell it that funny way User:G-Man 23:00, 17 Sep 2003 (UTC) : No, in german it is also spelled . --Thomas --------- kph is a measurement of speed, not velocity
See other meanings of words starting from letter:
Words begining with Kilometre_per_hour:
Kilometre_per_hour
Kilometre_per_hour
Kilometre per hour
Kilometre per hour (American English: kilometer per hour) is a physical unit of both speed (scalar) and velocity (vector (spatial)). The correct SI symbol is km/h or km·h−1, although the unit is sometimes written colloquially as kph, kmph, or km/hr. None of these corruptions is correct under the rules of SI in reference to correct style when using symbols. It is often spoken and sometimes written as klicks or kays in slang usage. By definition, an object travelling at a speed of 1 km/h for an hour would move 1 kilometre. * 3.6 km/h ≡ 1 metre·second−1, the SI derived unit of speed, metre per second * 1 km/h ≈ 0.27778 m/s * 1 km/h ≈ 0.62137 miles per hour ≈ 0.91134 foot (unit of length) per second == Examples of speeds in km/h == {| border="1" cellpadding="4" cellspacing="0" |----- | align="right" | 5 km/h || Walking speed |----- | align="right" | 20 km/h || Easy bicycle speed |----- | align="right" | 36 km/h | Top speed of a running human. (100 m in 10 seconds) |----- | align="right" | 50 km/h | Residential speed limit
Top speed of a running cat, or dog |----- | align="right" | 80–90 km/h | Speed limit on a major road
Top speed of an antelope |----- | align="right" | 110–120 km/h | Highway or motorway speed
Top speed of a cheetah |----- | align="right" | 300 km/h | High-speed rail |----- | align="right" | 1,000 km/h || Airliner cruising speed |----- | align="right" | 1,200 km/h | The approximate speed of sound (at sea level) |----- | align="right" | 1,228 km/h || Current world land speed record |----- | align="right" | 26,000 km/h | Re-entry speed of the space shuttle |----- | align="right" | 40,320 km/h || Earth's escape velocity |----- | align="right" | 1,079,252,848.8 km/h || Speed of light (exact) |} == External links == *[http://www.ex.ac.uk/trol/scol/ccspeed.htm Conversion Calculator for Units of SPEED] Units of velocity
Kilometre per hour
Should this page's name be changed to "Kilometres per hour"? User:Vancouverguy 22:45, 17 Sep 2003 (UTC) Why has someone changed the spelling from kilometre to kilometer. Kilometre with the "tre" is the standard worldwide spelling only Americans spell it that funny way User:G-Man 23:00, 17 Sep 2003 (UTC) : No, in german it is also spelled . --Thomas --------- kph is a measurement of speed, not velocity
See other meanings of words starting from letter:
K
KA | KB | KC | KD | KE | KF | KG | KH | KI | KJ | KL | KM | KN | KO | KP | KR | KS | KT | KU | KW | KX | KY | KZ |Words begining with Kilometre_per_hour:
Kilometre_per_hour
Kilometre_per_hour
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