What needs to be known to calculate the change in gravitational potential energy of an object when it is lifted vertically near the Earth's surface?
| The mass of the object | The height through which the object is lifted | The speed at which the object is lifted | |
|---|---|---|---|
| A | ✓\checkmark✓ | ✓\checkmark✓ | ✓\checkmark✓ |
| B | ✓\checkmark✓ | ✓\checkmark✓ | ×\times× |
| C | ✓\checkmark✓ | ×\times× | ✓\checkmark✓ |
| D | ×\times× | ✓\checkmark✓ | ×\times× |
where:
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.