a farmer moves along the boundary of a square field of side 10 metres in 40 seconds. what will be the magnitude of displacement of the farmer at an end of 2 minutes 20 seconds from his initial position?
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Answer: It's 140m as distance and
Displacement is 10√2
Explanation:
Perimeter=40m
In 1sec farmer completes 40m÷40sec
So,in 140 sec he will complete 140m
Displacement=√10²+10²=√200=10√2
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