Two objects of masses m and 3m are moving toward each other along the x-axis with same initial speed v0. The object with mass m is traveling to the left, and the object with mass 3m is traveling to the right. They undergo an elastic glancing collision such that m is moving downward after the collision at right angles from its initial direction.
(a) Find the final speeds of the two objects.
(b) What is the angle at which the object with mass 3m is scattered?