(a) A body at rest is given an initial uniform acceleration of 8.0 metre per second square for 30 seconds after which the acceleration is reduced to 5.0 metre per second square for the next 20 seconds. The body maintains the speed attained for 60 seconds after which it is brought to rest in 20 seconds.
Draw the velocity time graph of the motion using the information above.
(b) Using the graph calculate:
(i) Maximum speed attained during the motion
(ii) Average retardation as the body is being brought to rest.
(iii) Total distance travelled during the first 50 seconds.
(iv) Average speed during the same interval as in (iii).