Use words from the list below to complete the sentences about work, energy, and power.
A heavy block is lifted vertically upwards at a constant speed. In order to calculate the work done against gravity, it is necessary to know the ______________________ and the ______________________.
To calculate the power required to lift the block, it is also necessary to know the ______________________.
An electric motor used to lift the block actually consumes more electrical energy than the gravitational potential energy gained by the block.
Suggest why this is the case.
67 exam-style questions on CIE IGCSE Physics 1.7.2 Work done. Each one has a worked solution and a mark scheme showing where the marks go.