In science, some quantities have units. e.g. Mass (
kg) , time (
s), distance (
But what about quantities such as velocity (
m/s) and acceleration (
m/s/s) whose units are a combination of fundamental units and not a single unique unit.
What is the correct English term for something like
m/s ? Is it a unit or not, or is there another word to describe such combination of units?
I'm looking for a one-word answer. The ... of velocity is m/s.