Calculate acceleration from change in velocity and time.

Acceleration is defined as the rate of change of velocity over time. To calculate acceleration, you can use the formula: acceleration = change in velocity / time taken. This means that if an object's velocity increases or decreases over a specific time period, you can determine how quickly that change occurs. For example, if a car speeds up from 20 m/s to 30 m/s in 5 seconds, the change in velocity is 10 m/s, and the acceleration would be 10 m/s divided by 5 seconds, resulting in an acceleration of 2 m/s². Understanding acceleration is crucial for analyzing motion in physics.