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 v/2 in a direction perpendicular to the original direction. The mass A moves after collision in the direction:
same as that of B
Opposite to that of B
tan-1(1/2) to the x-axis
to the x-axis
According to law of conservation momentum along y-axis, we get