• • A 75 kg ski jumper starts his jump from the top of a 100 m high hill. She/he slides down the hill and up a jump board that is inclined at 45 degree and is 30 m high and reaches a speed of 102 km/h at the end of the board.

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

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

    c. What is the work lost in friction during the descent?

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Answer rating: 100% (QA)

To solve these problems we will first convert all given values into SI units The mass m is already i... View the full answer