odometer
The instrument used to measure the total distance that a car has traveled is called an odometer.
Speed.
An astronomical measure of distance is called?
speed
It is called speed Speed = Distance/Time
Velocity.
The average speed.
The measure of change in elevation in a certain distance is called gradient.
velocity
That quantity is called "speed". (not 'velocity')
Average Velocity!
That quantity is called "speed". (not 'velocity')