Two skaters stand at rest on ice. A skater of mass 60 kg pushes a skater of mass 40 kg. The 40 kg skater moves away at 3.0 m/s. What is the velocity of the 60 kg skater immediately after the push?
1.5 m/s1.5\ \text{m/s}1.5 m/s
2.0 m/s2.0\ \text{m/s}2.0 m/s
3.0 m/s3.0\ \text{m/s}3.0 m/s
4.5 m/s4.5\ \text{m/s}4.5 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.