Question

PLZ HELP

what is speed
distance per time(miles perhour or meters per second)
distance(miles or meters)
time per distance(hours per mile or seconds per meter)
time(hours or seconds)

Answer 1

The definition of speed is (distance covered) / (time to cover the distance) .

So a unit of speed has to be (a unit of length) / (a unit of time) .

Here are several perfectly fine units of speed:

-- miles per hour

-- feet per second

-- meters per second

-- kilometers per hour

-- inches per second

-- centimeters per minute

-- yards per Century

-- furlongs per fortnight

-- nanometers per microsecond

-- Smoots per week

-- parsecs per millenium