Question

in the first question, we described an energy transformation in a situation without friction. in reality, we almost always must contend with friction when analyzing energy transformations. how would the values change and why? a the ke value would decrease. friction causes some of the energy to be lost. b the pe - ke values would both decrease due to the presence of friction. friction opposes motion. c the ke value would decrease. friction causes some of the energy to be converted to heat energy. d the pe values would increase but the ke values would decrease. some of the pe would be converted to heat energy.

Explanation:

Friction converts mechanical energy (kinetic energy - KE and potential energy - PE) into heat energy. When friction is present in an energy - transformation situation, kinetic energy is reduced as some of it is converted into heat. Potential energy is not directly affected by friction in the context of this basic energy - transformation analysis related to motion.

Answer:

C. The KE value would decrease. Friction causes some of the energy to be converted to heat energy.