* Velocity is a vector quantity. It has both magnitude (speed) and direction.
* Speed is the magnitude of velocity. It tells you how fast an object is moving.
If velocity is constant, it means both the speed and direction of the object are not changing. Therefore, the speed cannot change either.
Example:
Imagine a car moving in a straight line at a constant speed of 50 km/h. Its velocity is constant because both its speed and direction are unchanging. Even though the car is moving, its speed remains the same, so the speed of the car is not changing even though its velocity is constant.
