During a Game of Billiards, a Player Propels the Smooth

During a game of billiards, a player propels the smooth white ball with a mass of 0.2 kg into the smooth wall surrounding the edge of the table. The ball collides with the wall at an angle of 35° and is travelling at a velocity of 3.5 m/s at the point of impact. If the coefficient of restitution is 0.65, determine the magnitude and direction of the ball's vertical velocity after its collision with the wall (i.e. v'y). Note: As both the ball and wall are smooth, assume that the horizontal component of the ball's velocity is unchanged after the collision (i.e. v'x); although it's direction will be opposite.