Yes, the velocity is 15 km/hr west. Velocity is a vector quantity that refers to the rate at which an object changes its position, including its direction. In this case, the velocity of 15 km/hr indicates the magnitude (speed) of the object's motion, which is 15 km per hour, and the direction is west. The west direction indicates that the object is moving towards the west with a speed of 15 km/hr.
