Q4. Answer is (A). Explain how?

Q4. Answer is (A). Explain how? 4. 5, where > Oand x is the distance of the A particle starts from rest, with an acceleration a — particle from a fixed point O. The particle is at a distance from O, when it is at rest. Its velocity when at a distance 2V1 from O is (d) none of these A particle starts from a point x = 0 along the positive X - axis with a velocity v varying with x as v = , the average velocity of the particle over the first s meters of its path is