Safety in Public Transport Quiz
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5 questions, one answer each
Each answer is checked as you go, with why.
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1. What is stopping distance the sum of?
- A. Braking distance and reaction distance only
- B. Thinking distance and braking distance
- C. Speed and time
- D. Kinetic energy and thermal energy
2. Which of these increases a driver's thinking distance?
- A. Worn brakes
- B. Icy roads
- C. Alcohol consumption
- D. Under-inflated tyres
3. At a constant speed in a straight line, what is true about the forces on a vehicle?
- A. Driving force is greater than resistive forces
- B. Resistive forces are greater than driving force
- C. Driving force and resistive forces are balanced
- D. There are no forces acting
4. When a vehicle brakes, kinetic energy is mainly transferred into which form?
- A. Sound energy only
- B. Thermal energy via friction
- C. Chemical energy
- D. Gravitational potential energy
5. A bus travels twice as fast on a wet road with worn tyres compared to a dry road with good tyres. Why is a much greater braking distance needed?
- A. Because thinking distance always doubles with speed
- B. Because higher speed means more kinetic energy to lose, and poor grip further reduces the braking force available
- C. Because the driver's reaction time always increases in rain
- D. Because braking distance is unaffected by tyre condition