Understanding Acceleration

Acceleration is the rate at which an object's velocity changes over time. It's calculated using the following formula:

* Acceleration (a) = (Final Velocity (vf) - Initial Velocity (vi)) / Time (t)

Applying the Formula

1. Identify the given values:

* Initial Velocity (vi) = 5 m/s

* Final Velocity (vf) = 20 m/s

* Time (t) = 3 s

2. Plug the values into the formula:

* a = (20 m/s - 5 m/s) / 3 s

3. Calculate the acceleration:

* a = 15 m/s / 3 s

* a = 5 m/s²

Answer: The car's acceleration is 5 m/s².