An athlete runs moves along the boundary of a square field of side 50m in 4 min. His displacement and the distance covered by him at the end of 11 minutes are

An athlete runs moves along the boundary of a square field of side 50m

1.	An athlete runs moves along the boundary of a square field of side 50m in 4 min. His displacement and the distance covered by him at the end of 11 minutes are
Answer» Given side of square =10m, thus perimeter P=40mTime taken to cover the BOUNDARY of 40 m =40 sThus in 1 second, the farmer covers a distance of 1 mNow distance covered by the farmer in 2 min 20 seconds = 1×140=140mNow the total NUMBER of rotation the farmer makes to cover a distance of 140 meters = perimetertotaldistance =3.5 At this POINT, the farmer is at a point SAY B from the origin OThus the displacement s= 10 2 +10 2 from Pythagoras theorem.s=10 2 =14.14m

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An athlete runs moves along the boundary of a square field of side 50m in 4 min. His displacement and the distance covered by him at the end of 11 minutes are

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