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?

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?

Responses
A The KE value would decrease. Friction causes some of the energy to be lost.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.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.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.

Answer 1

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

Friction converts some of the kinetic energy into heat energy, causing a decrease in the overall kinetic energy in the system. This results in a lower total energy in the system compared to the situation without friction.