Answer:Air brakes on buses and trucks are formally known as compressed air brake systems. Exercise machines can be built on pneumatic systems. Compressed-air engines, also called pneumatic motors, do mechanical work by expanding compressed air.
Step-by-step explanation:
Fluid power is the use of fluids under pressure to generate, control, and transmit power. Fluid power is subdivided into hydraulics using a liquid such as mineral oil or water, and pneumatic using a gas such as air or other gases