Trolley A has a mass of 1.5 kg and moves at 4.0 m/s. Trolley A collides with a stationary trolley B of mass 2.5 kg. The two trolleys join together. What is the velocity of the joined trolleys after the collision?
1.5 m/s1.5\ \text{m/s}1.5 m/s
2.4 m/s2.4\ \text{m/s}2.4 m/s
4.0 m/s4.0\ \text{m/s}4.0 m/s
6.0 m/s6.0\ \text{m/s}6.0 m/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.