Question

E. Answer the following questions.
1. A farmer moves along the boundary of a rectangular field ABCD as show
the figure. He takes 4 minutes to travel across each side.
80 m
40 m
40 m
80 m
Is the motion of this farmer uniform or non-uniform? Find his average speed
over one complete round of the field.​

Answer 1

Explanation:

the motion of the farmer is non uniform because he is moving 40 m in 4 min i.e. he is moving with a speed of 1/6 m/s and then travelling 80 m in 4 min i.e. he moves with a speed of 1/3 m/s.

average speed of the farmer

= total distance covered

------------------------------------------

total time taken

time is in min..

firstly convert it into second

= 16 × 60

= 960 s

average speed = 40+80+40+80

-------------------------

960

= 0.25 m/s

hope it helps....