Question

Thermal energy produced by friction cannot usually be used to do work. true/false

Answer 1

I believe the correct response would be true, thermal energy or heat that is produced by friction usually cannot be used to do work.

Answer 2

false

Step-by-step explanation:

Work may be done in positive or negative direction. When a work is done in positive direction, it is called useful work, when work is done in negative direction, it is known as useless work. Any energy associated with friction produces useless work. That is, the work is done in negative direction.

Therefore, thermal energy produced by friction can be used to do work but in negative direction.

The correct option is false.