Question

The brakes applied to a car produces an acceleration of 4m/sec . In the opposite direction to the motion. If the car takes 3 sec to stop after the application of brakes. Calculate the distance

Answer 1

i suppose the car is deccelerating for 3 sec.

a=v/t

v=at

v=(-4)(3)=-12m/s

therefor distance=speed/time

                            =12/3

                             =4m