A farmer moves along the boundary of a square field of side 10m in 40 seconds. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position?
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Expert's answer
2012-06-12T09:01:41-0400
As a farmer moves along the boundary of a square field of side 10m in 40 seconds, then his velocity is
V = 10/40 = 0.25 m/s.
So, the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds (or 60·2+20 = 140 seconds) from his initial position will be
Comments
No: either you pass all perimeter of the square in 40 seconds, or only its side
Yes but statement is same so condition should also b same. Which is the correct understanding according to the situation? 10m in 40s or 40m in 40s
It depends how to understand the condition: either 10 m in 40 sec, or 10*4 m in 40 sec.
Some of them are giving solution as considering the whole round of square field in 40s and calculating the answer as 14.14 m. I'm confused.
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