A child slides down a water slide from rest at point P, accelerating as they go down. At the bottom of the slide, the child enters a flat splash pool and comes to a complete stop at point Q.
Which sequence represents the main energy changes that take place between point P and point Q?
gravitational potential→kinetic→thermal\text{gravitational potential} \rightarrow \text{kinetic} \rightarrow \text{thermal}gravitational potential→kinetic→thermal
kinetic→gravitational potential→thermal\text{kinetic} \rightarrow \text{gravitational potential} \rightarrow \text{thermal}kinetic→gravitational potential→thermal
gravitational potential→thermal→kinetic\text{gravitational potential} \rightarrow \text{thermal} \rightarrow \text{kinetic}gravitational potential→thermal→kinetic
kinetic→thermal→gravitational potential\text{kinetic} \rightarrow \text{thermal} \rightarrow \text{gravitational potential}kinetic→thermal→gravitational potential
533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.