A car travelling at 30 mph takes 10 m to come to a complete stop. Consider the work done by the brakes when stopping to estimate the distance required to bring the car to a complete stop from 75 mph. What is this distance

The value of the distance S = 62.5 m

Explanation:

From third law of motion

v = 0 & u = 30

So 0 = + 2 × a × 10

a = - 45

When the car speed is 75  then in that case

u =  75 , v = 0

S = 62.5 m

This is the value of the distance.