* Momentum is a vector: Momentum (p) is calculated as mass (m) times velocity (v): p = mv. Velocity is a vector quantity, meaning it has both magnitude (speed) and direction.
* Changing direction: Even though the object's speed is constant, its direction is constantly changing as it moves in a circle. This means its velocity vector is constantly changing.
* Changing momentum: Since velocity is changing, momentum (which is directly proportional to velocity) is also changing.
In summary: While the magnitude of the momentum (mass times speed) remains constant, the direction of the momentum changes continuously, making the momentum itself a non-constant vector.
