Question

A farmer moves along the boundary of a square field of
side 10 m in 40 sec. What will be the magnitude of displacement displacement
of the farmer at the end of 2 minutes 20 seconds and what is the
total distance covered by him?
{THE DIAGRAM OF THE ABOVE SUM IS ATTACHED} ​

Answer 1

Answer:this is the answer pls mark me th briannliest

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 =

perimeter

totaldistance

​

=3.5

At this point, the farmer is at a point say B from the origin O

Thus the displacement s=

10

2

+10

2

​

 from Pythagoras theorem.

s=10

2

​

=14.14m