. A farmer moves along the boundary of a square field of side 20 m in 80 s. What will be the magnitude of displacement of the farmer at the end of 1 minutes 10 seconds from his initial position?
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Explanation:
His speed = distance/time
= 20/80 = 1/4 m/s
1 min. 10 sec. = 70 sec.
distance covered = 70*(1/4)
= 17.5 m
So displacement= 17.5m as he is moving along a square
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