* Acceleration: Acceleration is the rate of change of velocity. A positive acceleration means the velocity is increasing.
* Examples:
* A car speeding up from a stoplight.
* A ball rolling down a hill.
* A rocket launching into space.
* A person running faster.
When velocity doesn't increase:
* Constant velocity: An object moving at a constant speed in a straight line has zero acceleration and its velocity doesn't change.
* Deceleration: If an object is slowing down, it has negative acceleration, meaning its velocity is decreasing.
So, while it's possible for velocity to remain constant or decrease, it's just as common, if not more common, for velocity to increase.
