Which of the following is not an example of a velocity measurement? a)2m/s west b)10m/s north c)10m/s2 north d)5km/h north

A velocity shows both how fast and in which direction does object move. Velocity has vector properties. This means it has direction and magnitude.

Answers A), B) and D) show velocity. We can see the magnitude (number) and direction (west or north).
Answer C) does not show velocity. It has magnitude. But the unit used is not correct. Unit used is m/s2 which is unit used for acceleration.