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please help Sitting at the top of a 100 m ski jump, the skier has 50 000 J of gravitational potential energy. After skiing down

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Sitting at the top of a 100 m ski jump, the skier has 50 000 J of gravitational potential energy. After skiing down the jump, and taking off into the air, the skier now has both gravitational potential energy and kinetic energy. At mid jump, the skier is 60 m in the air. Calculate her gravitation potential energy and her kinetic energy at this point. Assume that no energy is lost to friction or air resistance

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