A car travelling in a straight line has an initial speed of 30m/s. The driver applies the brakes, and the car is brought to rest with uniform deceleration in 8s.
(i) Calculate the magnitude of the deceleration.
(ii) Find the total distance moved by the car before it comes to rest.
(iii) Determine the speed of the car when it has covered exactly half of the distance found in part (ii).