A car of mass 1100 kg is travelling at 18 m/s. The car hits a wall and stops. The front of the car is crushed during the crash. The car takes 0.20 s to stop.
Calculate the change in momentum of the car as it stops.
Calculate the average force acting on the car as it stops.
An identical car with a longer crumple zone hits the same wall at the same velocity. Explain why the average force on this car is smaller.
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.