A skateboarder pushes themselves along a flat pavement.
The skateboarder does 2100 J of useful work to travel a distance of 35 m.
Calculate the average force exerted by the skateboarder.
57 exam-style questions on Edexcel GCSE Physics 8.1 Energy transfers and work, covering 8.1.1 Energy stores and transfer diagrams, 8.1.2 Ways of changing a system's energy, and 8.1.3 Work done by forces. Each one has a worked solution and a mark scheme showing where the marks go.