Question

9. A particle is moving in a circular path of radius r. The displacement
after half an r circle would be----
A. Zero B. R C. 2r D. r/2

Answer 1

Answer:

A zero will be the answer

Answer 2

Answer:

Given, after half the circle, the particle will reach the diametrically opposite point i.e., from point A to point 6. And we know displacement is shortest path between initial and final point. Hence, the displacement after half circle is 2r.