Final answer:
Air brakes take longer to stop than hydraulic brakes because it takes longer for the air to flow through the lines.
Step-by-step explanation:
Air brakes take longer to stop than hydraulic brakes because it takes longer for the air to flow through the lines. In hydraulic brakes, the force applied by the driver on the pedal is transmitted through a fluid that is almost incompressible, resulting in a quick response and efficient stopping power. However, in air brakes, the air in the brake lines needs to be bled out, which introduces a delay in the transmission of force and therefore, longer stopping distance.