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(For the South African airport with IATA code "KMH", see Johan Pienaar Airport. An IATA airport code, also known an IATA location identifier, IATA station code or simply a location identifier, is a three-letter code designating many Johan Pienaar Airport is an airport serving Kuruman, a town in Northern Cape province South Africa )

The kilometre per hour (American English: kilometer per hour) is a unit of both speed (scalar) and velocity (vector). Phonology North American English regional phonology In many ways compared to English English, North American English is conservative in its Phonology. Speed is the rate of motion, or equivalently the rate of change in position often expressed as Distance d traveled per unit of In Physics, a scalar is a simple Physical quantity that is not changed by Coordinate system rotations or translations (in Newtonian mechanics or In Physics, velocity is defined as the rate of change of Position. The unit symbol is km/h or km·h−1; however, the colloquial abbreviations "kph" and "kmph" are sometimes also used in English-speaking countries, in analogy to mph, although these are not in accordance with international scientific standards. In North American slang and military usage, km/h (as well as km) is commonly pronounced, and sometimes even written, as klicks or kays (K's), although these may also be used to refer to kilometres. Slang is the use of highly informal Words and expressions that are not considered standard in the speaker's Dialect or Language. The kilometre ( American spelling: kilometer) symbol km is a unit of Length in the Metric system, equal to one thousand

The km/h is the worldwide most commonly used speed unit on road signs and car speedometers. Therefore, it is far more common in everyday usage than the proper SI unit of speed, m/s. Along with the kW·h, km/h is the most commonly used metric unit based on the hour, which is only a "non-SI unit accepted for use with the International System of Units" by the BIPM. The hour (symbol h) is a unit of Time. It is not an SI unit but is accepted for use with the SI The International Bureau of Weights and Measures ( Bureau international des poids et mesures, in French) is an international Standards organization, one [1]

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Conversions

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References

  1. ^ BIPM brochure (SI reference)
  2. ^ 1 yard ≡ 0. To help compare different Orders of magnitude, the following list describes various Speed levels between 1 9144 m and
    1 mile = 1760 yards thus
    1 mile = 1760 × 0. 9144 ÷ 1000 km

External links

 This standards- or measurement-related article is a stub. Standardization (or standardisation) is the process of developing and agreeing upon technical standards. Measurement is the process of estimating the magnitude of some attribute of an object such as its length or weight relative to some standard ( unit of measurement) such as You can help Wikipedia by expanding it.
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