Question
Question (4 marks): A car of mass 1200 kg is travelling at 15 m/s. The driver brakes and the car decelerates uniformly to rest over a distance of 22.5 m.
(a) Calculate the kinetic energy of the car before braking. (2) (b) Assuming all kinetic energy is transferred to the brakes as thermal energy, calculate the average braking force. (2)
4 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.