PhysCasts: Ski Jump with Drag Force

Hall, B. (Brenton)


This PhysCast looks at a conservation of energy problem. A 60 kg skier leaves the end of a ski-jump ramp with a velocity of 24 m/s directed 25 degrees above the horizontal. Suppose that as a result of air drag the skier returns to the ground with a speed of 22 m/s, landing 14 m vertically below the end of the ramp. From the launch to the return to ground, by how much is the mechanical energy of the skier-Earth system reduced because of air drag?

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Swinburne Commons

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