An autonomous cargo drone is used to lift a scientific equipment container vertically out of a deep canyon. During this ascent, the useful energy transferred to the gravitational potential energy store of the container is 78 kJ.
State the amount of useful work done on the container as it is lifted.
57 exam-style questions on Edexcel GCSE Physics 8.1 Energy transfers and work. Each one has a worked solution and a mark scheme showing where the marks go.