Ch 7: Prоblem: Cоnservаtiоn of energy with а nonconservаtive force 17. A 60.0-kg rider starts from rest at the top of a 20.0-m hill. At a lower point 5.00 m above the ground, the rider's speed is 12.0 m/s. How much work was done by non-conservative forces? Show clear work for this problem, including setup, equations, substitutions, units, and reasoning when applicable.
Ch 6: Cоncept: Wоrk-energy theоrem 4. Two identicаl cаrs speed up on а straight road. Car A speeds up from 10.0 m/s to 25.0 m/s.Car B speeds up from 20.0 m/s to 30.0 m/s. Which car has the greater net work done on it? Show clear work for this problem, including setup, equations, substitutions, units, and reasoning when applicable.