A solid disc rolls clockwise without slipping over a horizontal path with a constant speed `v`. Then the magnitude of the velocities of points `A, B` and `C` (see figure) with respect to a standing observer are, respectively,
.

Options

A. `v,v and v`
B. `2 v, sqrt(2) v` and zero
C. `2 v, 2 v` and zero
D. `2v, sqrt(2) v` and `sqrt(2) v`

Answer

B

Explanation

(b) Pure translation + Pure rotation = Rolling without slipping