A constant resultant force acts on a trolley on a level track. The trolley speeds up.
Which statement is correct?
Work done by the force increases the kinetic store of the trolley
Work done by the force increases the gravitational store of the trolley
No work is done on the trolley because the force stays constant
The kinetic store of the trolley stays the same as the force is constant
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.