A worker lifts a box using a constant upward force of 80 N. The box rises 75 cm and is then held still for 20 s. What is the total work done on the box by this force?
6000 J6000\ \mathrm{J}6000 J
1660 J1660\ \mathrm{J}1660 J
60 J60\ \mathrm{J}60 J
1600 J1600\ \mathrm{J}1600 J
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.