A warehouse worker does some work by lifting a heavy crate vertically.
He then lifts a second crate.
Which row indicates that the worker is now doing three times as much work?
| Weight of the second crate | Vertical distance the crate is lifted | |
|---|---|---|
| A | is tripled | is halved |
| B | is doubled | is doubled |
| C | is tripled | stays the same |
| D | stays the same | is halved |
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.