The graph shows how the speed of car changes with time. how far does the car travel before the brakes are applied?
A car travels with a uniform velocity of 25 m s−1 for 5 s. The brakes are then applied and the car is uniformly retarded and comes to rest in further 10 s.Find:(i) the distance which the car travels before the brakes are applied,(ii) the retardation,and (iii) the distance travelled by the car after applying the brakes.