mechanics
posted by Anonymous .
A 60 Kg skier leaves the end of a skijump ramp with a velocity of 24m/s directed 25° 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 14m vertically below the end of the ramp. From the launch to the return to the ground, by how much is the mechanical energy of the skierEarth system reduced because of air drag

mechanics 
drwls
Add the kinetic energy loss,
(1/2)M[(24^2  22^2] to the potential enenrgy loss,
M g H. (H = 14 m)
The launch angle doesn't matter.
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