Imagine you're driving a car. You're going 60 mph down a straight road. You see a red light ahead, so you slam on the brakes.

Here's what's happening:

* Direction of motion: Your car is moving forward.

* Acceleration: Your car is slowing down, meaning its velocity is decreasing. Since the car is slowing down, the acceleration is opposite the direction of motion (forward).

In this scenario, the acceleration is in the opposite direction of the car's motion, causing the car to slow down. This is called deceleration.