1. The problem statement, all variables and given/known data A ball drops some distance and loses 30 J of gravitational potential energy. Do not ignore air resistance. How much kinetic energy did the ball gain? A. More than 30J B. Exactly 30J C. Less than 30J D. Cannot be determined from the information given. 2. Relevant equations GPE = MGH KE = .5mv^2 3. The attempt at a solution I think the answer should be less than 30J, because those are conservative forces, but friction due to air resistance takes some potential energy away. My lab partner says it should be more than 30J, for the same reason. Help?