A car travelling on a straight road has to be brought to rest by applying the brakes.
(a) Explain what is meant by retardation.
(b) The car is moving with an initial velocity of 25m/s and comes to rest in 5s under uniform retardation. Calculate the magnitude of the retardation.
(c) Determine the distance covered by the car during the time the brakes act.
(d) Find the average velocity of the car during this braking period.