please answer both

1\". golf ball released 'eely om point A falls h=2 m high on an inclined plane at an angle of Fl: 31]\" to the horizontal and hits point D and it jumps {Figure ll. it'the collision coefcient is e 2 {LE . determine the position ot'point C. the highest point at which the hall 1.trill tench 'ont point 0. \f