Question

Two spheres A and B of masses m₁ and m₂ respectively collide. A is at rest initially and B is moving with velocity v along x-axis. After collision B has a velocity in a direction perpendicular to the original direction. The mass A moves after collision in the direction (a) same as that of B

(a) same as that of -B

(b) opposite to that of B

(c) θ = tan^-1 (1/2) to the x-axis

(d) θ = tan^-1 (-1/2) to the x-axis

Answer 1

Correct option (d) θ = tan^-1 (-1/2) to the x-axis

Explanation:

According to law of conservation of linear momentum along:r-axis, we get

According to law of conservation momentum along y-axis, we get