# A particle covers half of its total distance with speed 𝑣1 and the rest half distance with speed 𝑣2. Its average speed during the complete journey is

Question : A particle covers half of its total distance with speed 𝑣1 and the rest half distance with speed 𝑣2. Its average speed during the complete journey is

(A) $\dfrac{v_{1}^{2}v_{2}^{2}}{v_{1}^{2}+v_{2}^{2}}$

(B) $\dfrac{v_{1}+v_{2}}{2}$

(C) $\dfrac{v_{1}+v_{2}}{2}$

(D) $\dfrac{2v_{1}v_{2}}{v_{1}+v_{2}}$