* Velocity: Velocity is a vector quantity. It has both magnitude (speed) and direction.
* Zero Magnitude: When the magnitude of velocity is zero, the object is at rest. This means it has no speed.
* Direction: Without any speed, the object is not moving and cannot change its direction.
Think of it like this: Imagine a car parked in a driveway. It's not moving, so its velocity is zero (both magnitude and direction are zero). If the car is parked, it cannot change direction until it starts moving.
Changing Direction Requires Motion: To change direction, an object needs to have a non-zero velocity. This allows it to have a path and a direction that can be altered.