A 85 kg ski jumper starts his jump from the top of a 110 m high hill. She/he slides down the hill and up a jump board that is inclined at 47 and is 32 m high and reaches a speed of 102 km/h at the end of the board.

What is the ski jumper’s kinetic energy at the end of the board?

What would be her/his kinetic energy in the absence of friction?

What is the work lost in friction during the descent?