When a car stops, the brakes heat up because of friction. What is this an example of?

1 Answer
Nov 18, 2017

Energy transfer, I guess.

Explanation:

Most of the kinetic energy of the moving vehicle is converted to heat in the braking system, some ends up as heat in the road, heat in the tyre etc. A tiny amount is converted to sound (it sounds stupid to say it, but sound is very “cheap” in energy terms) and a proportion is used to shear off layers of the tread rubber (skid marks.)

These are all energy transfers/conversions.