(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The (non-conservative) force propelling a 1.10 x 10(3)-kg car up a mountain road does 6.80 x 10(6) 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 1.90 x 10(2) 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.

Calculate the work done by non-conservative forces using Wnc = dKE +DPE where

Wnc= W friction+W air+W engine

2. Relevant equations

I used W1= .5MV2 + MGH

and

required W =W1-W

3. The attempt at a solution

.5*1100kg*(22squared m/s) + 1100kg*9.8*192m = 2335960J

2335960-6800000 = -1655960J

What did I do wrong?

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# Homework Help: Calculation of work

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