An extreme skier, starting from rest, coasts down a mountain thatmakes an angle of 39.3 ° with the horizontal. The coefficientof kinetic friction between her skis and the snow is 0.227. Shecoasts for a distance of 18.3 m before coming to the edge of acliff. Without slowing down, she skis off the cliff and landsdownhill at a point whose vertical distance is 4.68 m below theedge. How fast is she going just before she lands?