Question

Two spheres A and B of masses m₁ and m₂ collide each other. Initially sphere A is at rest and B is moving with velocity v along X-axis. After collision, sphere B moves with velocity \(\frac{v}{2}\) in direction perpendicular to initial velocity. What will be direction of motion of A after collision?

(a) Same to B

(b) Opposite to B

(c) at angle θ = tan^-1\((\frac{1}{2})\) with X-axis

(d) at angle θ = tan^-1\((-\frac{1}{2})\) with X-axis

Answer 1

Correct option is : (d) at angle θ = tan^-1\((-\frac{1}{2})\) with X-axis

Here initial momentum,

Therefore, option (d) is correct.