Four students each push an identical box across the same rough floor. The table shows the pushing force, the distance moved and how the box moves.
Table: The pushing force, the distance moved and the motion of the box for four students
| Student | Pushing force / N | Distance moved / m | Motion of the box |
|---|---|---|---|
| J | 80 | 5.0 | constant speed |
| K | 80 | 4.0 | speeding up |
| L | 80 | 8.0 | constant speed |
| M | 80 | 3.0 | speeding up |
Which student does the greatest work against the frictional force?
J
K
L
M
40 exam-style questions on AQA GCSE Physics 5.2 Work done and energy transfer, covering 5.2 Work done and energy transfer. Each one has a worked solution and a mark scheme showing where the marks go.