Question

For a particle undergoing rectilinear motion with uniform acceleration, the magnitude of displacement is one third the distance covered in some time interval. The magnitude of final velocity is less than magnitude of initial velocity for this time interval. Then the ratio of initial speed to the final speed for this time interval is :

(A) √2 

(B) 2 

(C) √3 

(D) 3

Answer 1

Correct option (A) √2

Explanation:

Let u and v denote initial and find velocity, then then nature of motion is indicated in diagram