A forklift lifts 8 crates, each of weight 250 N. What other information is needed to calculate the useful work done in lifting the crates?
the vertical distance they are lifted
the mass of each crate
the time taken to lift the crates
the power of the forklift
67 exam-style questions on CIE IGCSE Physics 1.7.2 Work done. Each one has a worked solution and a mark scheme showing where the marks go.