A block slides across a rough horizontal table top.The work done by friction changes:
A)only the kinetic energy
B)only the potential energy
C)only the thermal energy
D)only the kinetic and potential energies
E)only the kinetic and thermal energies

Question

Quizplus · Accepted Answer

Friction converts some of the kinetic energy of the block into thermal energy, but does not affect the potential energy of the block. Therefore, the work done by friction changes only the kinetic and thermal energies of the system.

A Block Slides Across a Rough Horizontal Table Top