A metal block slides down a rough slope and speeds up. The block, the slope and the surrounding air are treated as one closed system.
Which statement about the energy stores as the block slides down the slope is correct?
The kinetic store alone gains all the energy that the gravitational potential store loses
The kinetic and thermal stores together gain all the energy that the gravitational potential store loses
The kinetic store gains all the energy the gravitational potential store loses, and friction adds more to the thermal stores
The kinetic and thermal stores together gain less energy than the gravitational potential store loses
104 exam-style questions on AQA GCSE Physics 1.2 Conservation and dissipation of energy, covering 1.2.1 Energy transfers in a system and 1.2.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.