A lorry has a mass of 7500 kg. The lorry is travelling at 22 m/s along a straight level road.
Calculate the change in momentum of the lorry when it is brought to rest.
The driver brakes and the lorry stops in 11 s. Calculate the average braking force acting on the lorry.
On another journey the same lorry is brought to rest from 22 m/s in a crash lasting 0.30 s. Estimate the average force acting on the lorry in the crash and compare it with your answer to part (b).
40 exam-style questions on AQA GCSE Physics 5.7 Momentum (HT only), covering 5.7.1 Momentum is a property of moving objects, 5.7.2 Conservation of momentum, and 5.7.3 Changes in momentum. Each one has a worked solution and a mark scheme showing where the marks go.