Four different weightlifters are training by lifting barbells vertically. The weight of the barbells and the vertical distance lifted by each weightlifter are given in the table below:
| Weightlifter | Weight of barbell (N\text{N}N) | Vertical distance lifted (m\text{m}m) |
|---|---|---|
| A | 1200 | 1.8 |
| B | 1200 | 1.9 |
| C | 1400 | 1.8 |
| D | 1400 | 1.9 |
Which weightlifter does the most work?
A
B
C
D
533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.