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March 28, 2017

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The (nonconservative) force propelling a 1.50 103-kg car up a mountain road does 5.10 106 J of work on the car. The car starts from rest at sea level and has a speed of 31.5 m/s at an altitude of 1.90 102 m above sea level. Obtain the work done on the car by the combined forces of friction and air resistance, both of which are nonconservative forces.

  • physics - ,

    work done by friction= workinput-realenergyoutput

    work done by friction= 5E6J-1/2 m 31.5^5-mg(190)

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