A spring is stretched so that its extension doubles. The limit of proportionality is not exceeded. What happens to the energy in the elastic potential energy store of the spring?
it stays the same
it doubles
it trebles
it quadruples
40 exam-style questions on AQA GCSE Physics 1.1 Energy changes in a system, and the ways energy is stored before and after such changes, covering 1.1.1 Energy stores and systems, 1.1.2 Changes in energy, 1.1.3 Energy changes in systems, and 1.1.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.