Question

A farmer moves along the boundary of a rectangular field ABCD as shown in
the figure. He takes 4 minutes to travel across each side.
80 m
А
B
40 m
40 m
D
С
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

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Answer 2

Answer:

total distance 80+40+80+40=240

total time. 4+4+4+4min=16

average speed. 240/ 16

average speed. 15 m/ min

the motion of the farmer is non uniform because he is travelling 40 m in 4 min i.e. he travels 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

He's speed is increasing and decreasing thus, it is not a uniform motion

average speed of the farmer = total distance

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

total time taken

time is in min

firstly convert it into second

16x60

960s

average speed = 40+80+40+80

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

960

=0.25 m/s

Explanation:

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