A student measures reaction times of 0.22 s, 0.24 s and 0.26 s. A vehicle travels at 25 m/s and has a braking distance of 35 m. Using the mean reaction time, what is its stopping distance?
6 m6\ \mathrm{m}6 m
41 m41\ \mathrm{m}41 m
53 m53\ \mathrm{m}53 m
60 m60\ \mathrm{m}60 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.