4 On a straight highway two cars A and B are running at the

Last updated: 6/24/2023

4 On a straight highway two cars A and B are running at the same speed u 108 km h in the same lane In the best efforts of braking at this speed the car A can stop in tA 7 0 s and the car B in t B 10 s In an emergency when driver of the front car applies brakes in response the driver of the rear car also has to apply brakes to avoid accident However braking of the rear car begins after a delay ta 1 0 s from the instant its driver notices the brake light signal of the front car If car B is running ahead of car A what should be the minimum