* Velocity is a measure of how fast something is moving *and* in what direction.

* Acceleration is a measure of how the velocity is changing.

Scenario:

Imagine a ball thrown straight up into the air.

* At the very peak of its trajectory, the ball momentarily stops moving upwards. Its velocity is zero.

* However, gravity is still acting on the ball, causing it to accelerate downwards. This means the ball's velocity is changing even though it's not moving at that instant.

Therefore, it's perfectly possible for a body to have zero velocity but finite acceleration.

Other Examples:

* A car at a red light: The car is stationary (zero velocity), but the driver is pressing the gas pedal, causing the car to accelerate (prepare to move).

* A ball at the bottom of a ramp: The ball is momentarily at rest (zero velocity) before rolling back down the ramp, accelerating due to gravity.