Acceleration is a change in velocity. Here's why that's important:

* Velocity is a combination of speed and direction.

So, the three ways you can accelerate are:

1. Changing speed: Going faster or slower.

2. Changing direction: Turning, even if your speed remains constant.

3. Changing both speed and direction: This is the most common type of acceleration. For example, if you're driving in a circle at constant speed, you're still accelerating because your direction is constantly changing.

Key point: Acceleration is not just about getting faster; it's about any change in velocity!