Question

The length of each side of a square field is 20 m. A jogger moves along the entire boundary of a square
field in 20 s. Find the displacement and the distance travelled by the jogger in 1 minute 10 seconds.​

Answer 1

Explanation:

Given side of square =10m, thus perimeter P=40m

Time taken to cover the boundary of 40 m =40 s

Thus in 1 second, the farmer covers a distance of 1 m

Now distance covered by the farmer in 2 min 20 seconds = 1×140=140m

Now 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 O

Thus the displacement s=102+102 from Pythagoras theorem.

s=102=14.14m 

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