In a crash test the average force on a dummy is 24 000 N and the dummy stops in 0.050 s. An air bag is then fitted and the test is repeated. The average force on the dummy falls to 8000 N and the change in momentum is unchanged. What is the new stopping time?
0.017 s
0.075 s
0.15 s
0.45 s
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.