Which is a valid velocity reading for an object?
45 m/s
45 m/s north
0 m/s south
0 m/s

Answer : The correct options are, 45 m/s north and 0 m/s south

Explanation :

Velocity : It is defined as the rate of change of position with respect to the time. It is a vector quantity that means velocity depends on the magnitude and the direction of an object. The S.I unit of velocity is meter per second or (m/s).

From the given options, 45 m/s north and 0 m/s south are a valid velocity reading for an object because it tell us about both magnitude and direction of an object.

While the other options are not a valid velocity reading for an object.

Hence, the correct options are, 45 m/s north and 0 m/s south