A van has a braking distance of 20 m. Its mass increases by 25% when it is loaded. It brakes from the same speed with the same constant braking force. What is the braking distance of the loaded van?
16 m16\ \mathrm{m}16 m
20 m20\ \mathrm{m}20 m
25 m25\ \mathrm{m}25 m
31.25 m31.25\ \mathrm{m}31.25 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.