A 58 kg skier is skiing down a 25 degree hill which offers negligible friction. Near...

A 58 kg skier is skiing down a 25 degree hill which offers negligible friction. Near the top of the hill (x =0), her speed is relatively small and equal to 3.6 m/s, but 57 m further downhill (x>0), her speed has grown to 18.59 m/s. Draw a Free body diagram. (thank you)

a) Argue, based on some energy calculations of course, that there must be significant air resistance.

b) The air resistance is a variable force and changes quadratically with the distance according to fair(x) = Bx2 (the x-axis points downward along the incline). From this information and the knowledge of initial and final speeds, calculate the value of B.

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genius_generous answered 1 year ago

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