two identical solid sphere is rolling without slipping with velocity V not over a graph horizontal surface collides elastically as - Physics -

Question

two identical solid sphere is rolling without slipping with
velocity V not over a graph horizontal surface collides elastically
as shown the final speed of centre of mass of spear to after
sufficient long time will be

Sanat K Mukherjee · Accepted Answer

Dear Student, Since the two spheres are identical and rolling
without slipping with equal velocity, after collision, due to
conservation of angular momentum, the balls will start moving in
the opposite directions with their velocities exchanged As the
velocities are same so the final speed of the centre of mass of the
sphere (II) will be v_o So, And (1) Regards

two identical solid sphere is rolling without slipping with velocity V not over a graph horizontal surface collides elastically as shown the final speed of centre of mass of spear to after sufficient long time will be