Question

A boy revolves 2½ revolution in a circular path of radius 20 metre. find the distance and displacement covered at the end of his journey​

Answer 1

Explanation:

According to your question, the body moves from point A to point B thereby completing half a revolution. Since distance is the length of path covered therefore it will be equal to half the circumference i.e. 1/2 × 2pi r or pi × r. And the displacement is equal to the distance between initial and final point. Therefore it will be equal to the diameter or r+r=2r.

Answer 2

Answer:

in one full revolution it's displacement wil be 0 so it has made no displacement in first 2 revolutions, so it's displacement will be calculated only on of half revolution but the diameter will be displacement cuz it is circular path ,, so displacement is 40 meters,,

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