Physics (AS & A Level) · May / June 2017 · Paper 13 · Question 14

The first column in the table gives four examples of work being done. The second column gives more detail of the action. Which row is not correct?

1. Aa girl dives from a diving board into a swimming pool — work is done by the girl against the gravitational field as she falls
2. Ba man pushes a car along a level road — work is done by the man against friction
3. Can electron is accelerated towards a positively charged plate — work is done on the electron by the electric field of the plate
4. Da piston is pushed outwards as a gas expands — work is done on the atmosphere by the gas

As printed in the paper