Question

a body accelerates uniformly from rest to
20m/s for 2 seconds, then moves with same
velocity for the next 6 seconds. After that it
retards and comes to rest in 2 seconds.
i) Draw the velocity-time graph for the motion
1) Calculate the total distance travelled
by the body​

Answer 1

Explanation:

The image below contains the graph of the motion of the body.

The area under the graph gives the distance.

The area is a trapezium.

Formulae for getting area of a trapezium :

(a+b) /2 × h

a=6s

b=12s

h=20m/s

A=(6+12)/2 ×20

9×20=180m

180m

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