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Asked by Shiva Last Modified
Answer 
Harshit Bhardwaj
The farmer takes 40 s to cover 4 × 10 = 40 m.
In 2 min and 20 s (140 s), he will cover a distance 
Therefore, the farmer completes 
rounds (3 complete rounds and a half round) of the field in 2 min and 20 s.
That means, after 2 min 20 s, the farmer will be at the opposite end of the starting point.
Now, there can be two extreme cases.
Case I: Starting point is a corner point of the field.
In this case, the farmer will be at the diagonally opposite corner of the field after 2 min 20 s.
Therefore, the displacement will be equal to the diagonal of the field.
Hence, the displacement will be 
Case II: Starting point is the middle point of any side of the field.
In this case the farmer will be at the middle point of the opposite side of the field after 2 min 20 s.
Therefore, the displacement will be equal to the side of the field, i.e., 10 m.
For any other starting point, the displacement will be between 14.1 m and 10 m.
read lessTotal time is 140s
Time required to complete one complete moment along border is 40s
So we can cover 3 and 1/2 moment along border.
At last we are at point of hypotenuse so displacement is length of hypotenuse
By that it is 10√2 m
read less Mehemud Ali
Completed graduation in Mathematics from Calcutta University
Fuzail Iqbal
View 2 more Answers
Related Questions
An object has moved through a distance. Can it have zero displacement? If yes, support your answer with an example?
(a) It cannot be zero.(b) Its magnitude is greater than the distance travelled by the object.
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