Question

find the distance and displacement of a farmer in one hour who completes a round of a square field of side 20m in 20 minutes​

Answer 1

In 20 mins farmer cover a distance of= 20 m

In 1 min farmer cover a distance of = 20 / 20

In 60 mins farmer cover a distance of =

(20 / 20)×60

= - 1 × 60 m

= - 60 m

Distance = 60m

Displacement = 0 . Since, the farmer reaches at the same point from where he has started his journey so the displacement is 0 .

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★ 1 hour = 60 min so in place of 1 hour in the last line we have written 60 mins since all the time has been mentioned in min so we should convert the hour also in minute .

★ The process used to find here is " unitary method " .