Final answer:
In hydraulic braking systems, pushing the brake pedal down further when the brakes are already engaged does not increase the force applied to the brakes.
Step-by-step explanation:
In hydraulic braking systems, the brake pedal is connected to a hydraulic system that increases the force exerted on the brakes. When you push the brake pedal down, it increases the pressure on the hydraulic system, which in turn applies more force on the brakes. So, if the brakes are already engaged, there is no need to push the pedal down further as it will not increase the force applied to the brakes.