Two powered stage systems pull scenery across a theatre floor. Each system exerts a constant force in the direction of motion.
| System | Force in N | Distance moved in m | Time taken in s |
|---|---|---|---|
| A | 320 | 18 | 24 |
| B | 450 | 16 | 20 |
Calculate the ratio of the useful power of system B to the useful power of system A.
128 exam-style questions on Edexcel GCSE Physics 8.3 Power and efficiency, covering 8.3.1 Power and 8.3.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.