A car travels at 54 km/h. The driver has a reaction time of 0.80 s and the braking distance is 18 m. Use 1 m/s=3.6 km/h1\ \mathrm{m/s}=3.6\ \mathrm{km/h}1 m/s=3.6 km/h. What is the stopping distance?
12 m12\ \mathrm{m}12 m
30 m30\ \mathrm{m}30 m
43.2 m43.2\ \mathrm{m}43.2 m
61.2 m61.2\ \mathrm{m}61.2 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.