I need help solving this

1. A ball falls straight down into a tilted surface as shown in the figure below. The surface exerts an impulse on the ball of 0.250 kg·m/s in the direction 25.0◦ to the right of the vertical. As a result, the ball bounces off the surface with a speed of 0.300 m/s in the direction θ = 20.0 ◦ above the horizontal. (a) At what speed was the ball traveling when it hit the surface? (b) Suppose the ball was traveling twice as fast as your answer in part (a) when it hit the surface, but bounced off the surface with the same velocity as it did in part (a). What angle with the vertical would the impulse exerted on the ball by the surface make in this case?