Practice question

Why does a fully laden truck need a much longer distance to stop than a car travelling at the same speed?

  1. Truck brakes are always in poorer condition than car brakes
  2. The greater mass of the truck carries far more kinetic energy that the brakes must absorb
  3. Truck drivers have slower reaction times
  4. Trucks are not permitted to brake as hard as cars

Answer: B — The greater mass of the truck carries far more kinetic energy that the brakes must absorb

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