A body at rest is given an initial uniform acceleration of 8ms-2 for 30secs after which the acceleration is reduced to 5ms-2 for the next 20secs. The body maintains the speed attained for 60secs after which it was brought to rest in 20secs. Draw the velocity time graph of the motion using the information given above, Calculate the:
I. Maximum speed attained during the motion
II. Average retardation as the body is been brought to rest
III. Total distance travelled during the first 50secs
IV. Average speed during the same interval as in Roman figure (iii).
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