Safety in public transport — WJEC GCSE Physics
In summary: Safety in public transport is a key topic in WJEC GCSE Physics. Key exam tip: Always distinguish clearly between thinking distance and braking distance in your explanations
Exam Tips for Safety in public transport
- Always distinguish clearly between thinking distance and braking distance in your explanations
- Remember that large decelerations result in large forces, which can be dangerous to passengers
- Use the principle of work done and energy transfer when explaining how safety features like crumple zones reduce the force on occupants
Common Mistakes
- Confusing thinking distance with braking distance
- Failing to distinguish between the factors affecting thinking distance (driver-related) and braking distance (vehicle/road-related)
- Incorrectly applying the relationship between force, mass, and acceleration during deceleration calculations
Marking Points
- Explanation of human reaction time and its impact on thinking distance
- Identification of factors affecting braking distance (e.g., road conditions, vehicle mass, speed)
- Calculation or estimation of forces involved in rapid deceleration
- Application of energy and force principles to explain the function of safety features like crumple zones and airbags
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