A student measures the work done pulling a block 80 cm along a bench. The table shows three measurements of the steady pulling force.
| Trial | Force in N\mathrm{N}N |
|---|---|
| 1 | 2.4 |
| 2 | 2.6 |
| 3 | 2.5 |
What is the work done, calculated using the mean force?
6.0 J6.0\ \mathrm{J}6.0 J
200 J200\ \mathrm{J}200 J
2.0 J2.0\ \mathrm{J}2.0 J
3.1 J3.1\ \mathrm{J}3.1 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.