If a car goes from 20 miles per hour in 5 seconds, find its acceleration

The acceleration of the car, is a = 4 m/s²

Explanation:

Given data,

The final velocity of the car, u = 0

The final velocity of the car, v = 20 miles/h

The time period of travel, t = 5 s

The acceleration of an object is defined as the rate of change of velocity.

From first equation of motion,

a = (v-u) / t

= (20 - 0) / 5

= 4 m/s²

Hence, the acceleration of the car, is a = 4 m/s²