A ball is dropped and rebounds to a lower height. Consider a system containing the ball, Earth and surroundings. No energy crosses the boundary of this system. Which describes the changes between release and the top of the rebound?
Gravitational potential energy is unchanged; total energy decreases.
Gravitational potential energy decreases; total energy is unchanged.
Gravitational potential energy decreases; total energy decreases.
Gravitational potential energy is unchanged; total energy is unchanged.
121 exam-style questions on Edexcel GCSE Physics 3.1 Energy stores and calculations, covering 3.1.1 Gravitational potential energy, 3.1.2 Kinetic energy, and 3.1.3 Energy transfers and conservation of energy. Each one has a worked solution and a mark scheme showing where the marks go.