A groundskeeper pushes a lawn roller 4.5 m across level ground. A constant force of 72 N acts in the direction in which the roller moves. Which calculation gives the work done by this force?
72+4.572 + 4.572+4.5
72÷4.572 \div 4.572÷4.5
72×4.572 \times 4.572×4.5
4.5÷724.5 \div 724.5÷72
115 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.