Question

A particle moves in straight line with velocity v₁ and v₂ for time intervals which are in ratio 1:2. Find average velocity.

(a) v₁/3 + 2v₂/3

(b) v₁/3 v₂/3

(c) 2v₁/3 + v₂/3

(d) v₁ + 2v₂/3

Answer 1

Correct option (a) v₁/3 + 2v₂/3

Explanation:

(a) v_av = (v₁t/3 + v₂(2t/3))/t = v₁/3 + 2v₂/3