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Unformatted text preview: kinetic energy. Therefore, the sum of all the energies in the system is a constant. 3. If friction has been present, would this have affected the loss in potential energy of the cart? If so, how? Loss in potential energy of the cart would not have been affected. Since potential energy is the energy possessed by an object because of its position (motion is not involved), friction would be irrelevant in calculating potential energy. If friction had been present, would this have affected the change in kinetic energy of the cart? If so, how? Yes, when contacting surfaces move relative to each other, the friction between the two objects converts kinetic energy into thermal energy. Friction opposes motion, decreasing velocity until the motion of the object comes to a stop. = KE 12mv2 Since kinetic energy and velocity are directly proportional, a decrease in velocity results in a decrease in kinetic energy....
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