A loaded plastic tray is given a push along a horizontal worktop and then released. While the tray is sliding, a frictional force of 15 N brings it to rest over a distance of 1.6 m.
Which statement about the energy transferred while the tray is slowing down is correct?
9.4 J is transferred from the thermal energy stores of the tray and the worktop to the kinetic energy store of the tray.
24 J is transferred from the kinetic energy store of the tray to the thermal energy stores of the tray and the worktop.
9.4 J is transferred from the kinetic energy store of the tray to the thermal energy stores of the tray and the worktop.
24 J is transferred from the thermal energy stores of the tray and the worktop to the kinetic energy store of the tray.
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.