In april of 1966, Chicago Club slugger Dave Kingman hit a home run which cleared the Wrigley Field Force fence and hit a house located 530 feet(162 m) from home plate. Suppose that the 0.146-kg baseball left Kingman's bat at 47.1 m/s and that it lost 11.4 % of its orginal energy by the time it cleared the stadium wall at a height of 20.3 meters above the height at which the bat contacted the ball. Determine the speed of the ball as it passed above the wall.