A person driving a car with a speed of 72 Km h observe a boy

Last updated: 6/10/2023

A person driving a car with a speed of 72 Km h observe a boy crossing the road at a distance of 100 m from car Driver apply the brake and retard the car with a retardation of 5 m s2 and just able to avoid the accident The reaction time of driver is 1 2 0 s 3 3 0 s 2 4 2 4 s 2 8 s