A mechanical engineering team is testing the stopping distances of a prototype electric vehicle equipped with different regenerative braking configurations. They measure the total stopping distance of the vehicle from an initial velocity of 25 m s-1 under two configurations, Configuration A and Configuration B.
The table below shows the stopping distances recorded across five trials for each configuration.
| Configuration | Trial 1 distance (m) | Trial 2 distance (m) | Trial 3 distance (m) | Trial 4 distance (m) | Trial 5 distance (m) | Mean distance (m) |
|---|---|---|---|---|---|---|
| Configuration A | 34.2 | 36.5 | 33.8 | 35.9 | 34.6 | 35 |
| Configuration B | 45.8 | 48.2 | 46.4 | 49.1 | 47.5 | ? |
Calculate the mean stopping distance for Configuration B. Give your answer correct to 2 significant figures.
39 exam-style questions on Edexcel GCSE Physics 2.5 Stopping and braking distances. Each one has a worked solution and a mark scheme showing where the marks go.