Two identical blocks are dragged the same distance across the same rough floor. Block 1 is dragged quickly and block 2 is dragged slowly. The frictional force on each block is the same.
Which statement is correct?
The same work is done against friction on each of the two blocks.
More work is done against friction on block 1, because it moves faster.
More work is done against friction on block 2, because it takes longer.
No work is done against friction, because the blocks move steadily.
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.