Answer: Velocity is called a vector quantity because it has both magnitude and direction.
Explanation: In physics, a vector quantity is defined as a quantity that requires both a numerical value (magnitude) and a direction to fully describe it. For example, if a car is traveling at 60 kilometers per hour, that is the magnitude of its speed. However, to specify its velocity, we also need to know the direction it is moving, such as “60 kilometers per hour to the north.” This combination of speed (magnitude) and direction is what characterizes velocity as a vector quantity, distinguishing it from scalar quantities, which have only magnitude (like speed).