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What do you measure speed with?

Deborah Edwards

in Studying

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Zach Chandler on November 23, 2019

miles per hour in the united states. kilometers per hour in most other places. In the uk the only legal units of distance and speed for land transport are still the Statute Mile and yards, miles per hour, respectively. (For the roads anyway. I'm not sure what the British railway system used today. I think it's still miles and miles per hour, but historically they have always used miles, chains and yards of distance.) Otherwise, meters / second in the Metric and IF your branch. Or feet per second. Rather it depends on what is being measured: m/s or mm/s would make sense for something like the moving parts of a machine, for example, but absurd for geological processes where mm/year would be appropriate. And in astronomy, km/s would save three 0s in the stats, although it probably use index notation anyway.

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