A moving trolley hits a wall and stops.
Which statement describes what happens to the energy in the kinetic store of the trolley?
It is destroyed when the trolley comes to a stop
It is transferred to the gravitational store of the trolley
It is transferred to the chemical store of the wall it hits
It is transferred to the thermal stores of the trolley and wall
44 exam-style questions on OCR GCSE Physics 7.1 Work done, covering 7.1.1 Conservation of energy in a closed system, 7.1.2 Energy stores and transfers, 7.1.3 Energy changes by heating, forces and current, 7.1.4 Quantifying energy transfers in a system, and 7.1.5 Kinetic, elastic and gravitational potential energy. Each one has a worked solution and a mark scheme showing where the marks go.