Which of the following is a measure of velocity?

Select one:

a. 250 m/s

b. 40 m/s2

c. 31 m/s north

d. 55 m/s2 west

The definition of velocity is a speed in a given direction. So the unit must include the speed and the direction that the object is moving. C. 31 m/s north is the correct answer, because the unit has the speed and the distance included. Although D has the same factors in it's answer, speed is only distance divided by time, and is not squared as it is shown incorrectly in answer D.