Air Brake Coach
Driving with air brakesQuestion 91 of 116

What do brakes change the energy of momentum into?

  1. Heat
  2. Light
  3. Pressure
  4. Sound
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Correct answer: Heat

Brakes convert the energy of momentum into heat. The drums or rotors release the heat to the air.

Source: Air Brake Manual: A Guide for Instructors (Government of Alberta, Alberta Transportation, March/April 2012), Module 1: Braking fundamentals, page 31

Practice driving with air brakes

Questions last reviewed: 18 October 2026