* Velocity is the rate of change of an object's position and indicates its direction of motion.

* Acceleration is the rate of change of an object's velocity. It tells you how the velocity is changing, not necessarily the direction of motion itself.

Here's a common example:

Imagine you throw a ball straight up in the air.

* As the ball travels upward:

* Its velocity is positive (going upwards).

* Its acceleration is negative (due to gravity, pulling it downwards).

* At the peak of its trajectory:

* Velocity is zero (momentarily stopped).

* Acceleration is still negative (gravity is still acting on it).

* As the ball falls back down:

* Velocity is negative (going downwards).

* Acceleration is still negative (gravity is still pulling it downwards).

In summary:

When an object slows down, its velocity and acceleration point in opposite directions. This happens because the acceleration is working to *decrease* the object's speed.