# physics

The (non-conservative) force propelling a 1.40 x 103-kg car up a mountain road does 7.60 x 106 J of work on the car. The car starts from rest at sea level and has a speed of 22.0 m/s at an altitude of 2.50 x 102 m above sea level. Obtain the work done on the car by the combined forces of friction and air resistance, both of which are non-conservative forces.

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1. This can't be solved without knowing the distance the car travelled.
Fd - mgh - 1/2mv^2 = W lost

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posted by Chanz

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