Learning objective

Explain why excessive braking can make brakes overheat.

Read the explanation, check the common trap, then practise with flashcards and questions.

At a glance

5

Flashcards

7

Questions

Topic

Work done and energy transfer

Subtopic

Energy transfer and braking

AQA GCSE PhysicsForces

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Short explanation

In the Work done and energy transfer topic, the Energy transfer and braking subtopic explains why excessive braking can make brakes overheat. When a driver brakes hard or repeatedly, friction between the brake pads and wheel discs does work against the vehicle's motion. Kinetic energy from the moving vehicle is transferred into thermal energy in the brakes and surroundings. If this energy is transferred faster than it can be dissipated, the brake temperature rises, which can cause brake fade and reduce the frictional braking force.

Key concepts

braking forcethermal energy transfer

Why it matters

This objective helps connect Energy transfer and braking to exam-style questions, flashcards, and revision notes for Work done and energy transfer.

Common mistakes

1 linked
  • Brakes Overheating: Understand that excessive braking generates more heat due to increased work done against friction, leading to overheating.

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