# A particle is moving with a constant speed 𝑣 in a circle. What is the magnitude of average after half rotation?

Question : A particle is moving with a constant speed 𝑣 in a circle. What is the magnitude of average after half rotation?

(A) 2v

(B) $2\dfrac{v}{\pi }$

(C) $\dfrac{v}{2}$

(D) $\dfrac{v}{2\pi}$