* Velocity is a vector quantity. It has both magnitude (speed) and direction.
* Speed is a scalar quantity. It only has magnitude (how fast an object is moving).
So, if an object is moving at constant velocity, it means its speed is constant and its direction is also constant.
Example: A car traveling at 60 km/h due east has a constant velocity. It has a constant speed of 60 km/h and is moving in a constant direction (east).
Important Note: While constant velocity implies constant speed, constant speed does not always imply constant velocity. A car traveling around a circular track at a constant speed of 60 km/h would be changing direction and therefore would not have a constant velocity.
