Speed is measured in what?

Answer 1

Speed is measured in units of distance over time. For instance, "miles per hour" or "meters per second". There are several standards for measuring both time and distance which are appropriate for denoting speed.

Answer 2

Speed of propulsion is measured as the quotient of distance covered and the time taken to cover that distance. The System International defined the combined unit of speed as m/s (meters per second).

Common everyday derived units are km/h (kilometers per hour) or the imperial mph (miles per hour). Many other derived units are in use, but all are derived from the base unit m/s through linear factors of distance and time.

Speed can also mean speed of execution, for example in a computer. This would be measured in units of instructions per second (e.g. MIPS, mega instructions per second) or floating point operations per second (e.g. GFLOPS, giga floating point operations per second). Other units of speed of execution are defined by specific algorithms, collectively known as benchmarks.

Answer 3

Distance per time unit.

Usually m/s