A vehicle starts from rest and in 30s reaches a speed of 20m/s. Thereafter the speed remains steady for 15s and decreases steadily until it stops 5s.

Question

i. Use the data provided to draw a velocity-time graph for the motion
ii. Calculate the acceleration during the first 30s
iii. What is the total distance covered by the vehicle

Answer 1

(i) the graph consists of three straight-line segments, where the slope of each section is the acceleration.

(ii) a = 20/30 m/s^2

the graph will show the answer to (iii)