An object can have zero acceleration but still be moving if it's moving at a constant velocity. Here's why:

* Acceleration is the rate of change of velocity. This means it describes how quickly an object's speed or direction is changing.

* Velocity has both speed (how fast something is moving) and direction.

Examples:

* A car traveling at a steady 60 mph on a straight road. The car is moving, but its velocity is constant – it's not speeding up or slowing down, and it's not changing direction. Therefore, its acceleration is zero.

* A ball rolling across a frictionless surface. The ball will continue moving at a constant speed in a straight line without any change in velocity, meaning its acceleration is zero.

Key takeaway: Zero acceleration doesn't mean the object is stationary. It simply means the object's velocity is not changing.