A toy rocket is launched vertically upwards from the ground by a compressed spring. As the rocket reaches its maximum height, energy is transferred from the elastic store of the spring. Where is the useful energy transferred to?
A gravitational store only.
A kinetic store only.
A gravitational store and a thermal store only.
A kinetic store and a thermal store only.
37 exam-style questions on OCR GCSE Physics Power and efficiency. Each one has a worked solution and a mark scheme showing where the marks go.