A track-maintenance vehicle is moving along a level test track. Its brakes exert a constant force until it comes to rest.
| Quantity | Value |
|---|---|
| mass of vehicle | 600 kg |
| speed when braking starts | 12 m/s |
| braking distance | 18 m |
Show that the force exerted by the brakes is 2400 N.
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.