* Velocity is a vector quantity, meaning it has both magnitude (speed) and direction.
* Acceleration is the rate of change of velocity. This means that if velocity is changing, either in speed or direction, there is acceleration.
Therefore, if an object is moving at a constant velocity, it means its speed and direction are not changing. Since there is no change in velocity, there is no acceleration.
Think of it this way:
* Imagine a car driving down a straight road at a steady 60 mph. This is constant velocity. Since the speed and direction aren't changing, the car is not accelerating.
* Now imagine the same car turning a corner. Even if it maintains the same speed (60 mph), its direction is changing. This change in direction means the car is accelerating, even if the speed is constant.
