Practice question

When vehicle speed doubles from 50 km/h to 100 km/h, what happens to the vehicle's kinetic energy and braking distance?

  1. They double (increase by 2 times)
  2. They triple (increase by 3 times)
  3. They quadruple (increase by 4 times)
  4. They remain unchanged because modern brakes compensate

Answer: C — They quadruple (increase by 4 times)

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