A car has a thinking distance of 12 m and a braking distance of 24 m. On a second journey at the same speed, the reaction time increases by 50% and the braking distance doubles. What is the new stopping distance?
54 m54\ \mathrm{m}54 m
66 m66\ \mathrm{m}66 m
60 m60\ \mathrm{m}60 m
72 m72\ \mathrm{m}72 m
126 exam-style questions on Edexcel GCSE Physics 2.5 Stopping and braking distances, covering 2.5.1 Stopping distance and reaction time, 2.5.2 Factors affecting stopping distance, 2.5.3 Dangers of large decelerations, and 2.5.4 Braking distance and initial speed. Each one has a worked solution and a mark scheme showing where the marks go.