Let’s get to it. Acceleration is the rate of change of an objects velocity. It is how the velocity changes. When car companies brag about how quickly their vehicles go from 0 to 60, they are talking about the acceleration.They are talking about how quickly their cars velocity can change from 0 mph to 60 mph. Objects don’t just stay at a constant velocity, always moving at 2 m/s. They speed up and slow down. That change from 2 m/s to 10 m/s as an object speeds up or from 2 m/s to 1 m/s as the object slows down, is the acceleration.We can make a connection here.We talked about velocity as change in position over time.Acceleration is the change in velocity over time.