In a theatre workshop, two sliding scenery doors are moved along separate straight tracks. Door P moves a greater distance than door Q. The frictional force opposing each door is the same.
Which statement is correct?
More work is done against friction on door P, because work done is force multiplied by distance.
More work is done against friction on door Q, because work done is force divided by distance.
Equal work is done against friction on the two doors, because the frictional forces are equal.
The work done against friction cannot be compared, because the speeds of the doors are not given.
113 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.