Distance covered per unit of time is called what.

Answer 1

Are these your choices?

a) acceleration c) inertia
b) velocity d) speed

What do YOU think the answer is?

Answer 2

its either speed or velocity

Answer 3

http://www.physicsclassroom.com/CLASS/1DKin/u1l1d.cfm

Answer 4

for speed you only need a speedometer.
for velocity you need a speedometer and a compass.