This question is about the physics of vehicle safety, kinetic energy dissipation, and stopping dynamics of heavy goods transport.
Explain how various factors affect the total stopping distance of a heavy-duty electric freight lorry by separately considering thinking distance and braking distance.
Write down the equation that links work done, average force, and distance moved in the direction of the force.
During a controlled emergency stop test, the work done by the braking system to bring a heavy-duty electric lorry to a standstill is 1 350 000 J1\,350\,000\text{ J}1350000 J. The average total braking force applied to the lorry is 30 000 N30\,000\text{ N}30000 N. Calculate the braking distance of the lorry.
Explain the potential physical dangers to the lorry's stability and control when it undergoes an extremely large deceleration during emergency braking.