A diesel locomotive pulls a heavy cargo carriage along a horizontal track.
The locomotive pulls the carriage with a constant force of 350 N350\text{ N}350 N for a distance of 220 m220\text{ m}220 m.
(i) State the equation linking work done, force, and distance.
(ii) Calculate the work done by the locomotive on the carriage.
(iii) State how much energy is transferred to the carriage.
The mass of the locomotive is 4500 kg4500\text{ kg}4500 kg. The mass of the carriage is 1500 kg1500\text{ kg}1500 kg.
(i) State the equation linking kinetic energy, mass, and velocity.
(ii) Calculate the total kinetic energy when the locomotive and carriage travel together at a constant speed of 12 m/s12\text{ m/s}12 m/s.
The carriage is uncoupled, and the locomotive continues its journey alone. Without the carriage, the locomotive has greater acceleration and uses less fuel. Explain these changes.
36 exam-style questions on Edexcel IGCSE Physics Energy transfers. Each one has a worked solution and a mark scheme showing where the marks go.