A skier (m = 63.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. The height of the launch point on the ski jump is h = 6.40 m and the skier travels a distance D = 10.9 m before reaching the (horizontal) ground. Find the initial height H of the ski jump. Find the skier's total kinetic energy as she reaches the ground.