Question

A boy moves along a circular path of perimeter $30m$ and comes back to the point where he started the journey. What is the distance covered and the displacement of the boy?

• A. Distance = $0m$
  Displacement = $0m$
• B. Distance = $30m$
  Displacement = $0m$
• C. Distance = $30m$
  Displacement = $30m$
• D. Distance = $0m$
  Displacement = $30m$

Answer 1

The correct option is B Distance = $30m$

Displacement = $0m$
Given, perimeter of the circle = $30m$.
Since the boy covers the whole circular path during his journey, distance travelled by the boy = $30m$
Since he comes back to the initial position where he started his journey, displacement = $0m$
$\therefore$ Distance covered = $30m$ and displacement = $0m$.