The unit of measurement for speed is a fixed amount distance divided by a fixed amount of time.
i.e.: Miles/Hour, Kilometers/Second, Meters/Hour, inches/day
Currently in the US, milers/hour or "mph" is a standard for motor vehicles. It is kilometers/hour, or "kph" other countries.
There might be some confusion with the above and the word "lightyears." 1 lightyear designates a distance, the distance light travels in 1 year through a vacuum. Some may confuse this as speed, when it is actually a measurement of distance.
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The "anemometer" is an instrument used to measure wind speed. Its output is a speed measurement, and may be expressed in any convenient unit of speed, such as 'miles per hour', 'kilometers per hour', 'feet per second', etc. Anemometers are sold in units of "each".
The SI standard unit for length is the meter (m).
The speed measurement unit for QuickPath Interconnect (QPI) is Gigatransfers per second (GT/s). This unit is used to measure the data transfer rate between components in a computer system, such as between the CPU and chipset.
The unit of measurement for force on an object is the newton (N).
The unit "mph" stands for miles per hour, which is a measurement of speed. In the context of wind speed, it indicates how fast the wind is moving in miles per hour.