When a driver applies the brakes to keep a car going downhill at a constant velocity and a constant kinetic energy, the potential energy of the car decreases. where does this energy go?

Imagine a child who consistently gets mediocre grades and is often picked last for a team when games are played at recess. however, he likes to make silly jokes and play pranks, and he notices that people laugh when he does those things. the child starts to think that others are laughing with him, not at him. this is part of the process that charles cooley