A cleaner pushes a laundry trolley at a constant speed, first across smooth tiles and then across carpet. The pushing force is horizontal.
| Floor surface | Pushing force (N) | Distance moved (m) |
|---|---|---|
| Tiles | 12 | 3.0 |
| Carpet | 20 | unknown |
The total work done against friction across both surfaces is 116 J.
Calculate the distance the trolley moves across the carpet.
113 exam-style questions on AQA GCSE Physics 5.2 Work done and energy transfer, covering 5.2 Work done and energy transfer. Each one has a worked solution and a mark scheme showing where the marks go.