Question

friction removes energy from objects in motion. Which statement best describes how this works?
a) friction transforms KE into thermal energy
b) friction transfers thermal energy to KE
c) friction transforms TE into PE
d) friction transforms PE into KE
e) friction transfers KE into PE

Answer 1

friction transforms KE into thermal energy (a)

That's why, if it goes on long enough, the moving object actually gets warm.