A battery-powered quadcopter drone is flown on a delivery mission inside a large, level warehouse, maintaining a constant height of 3 m above the horizontal floor. The drone accelerates, slows down, and hovers several times during its flight, causing its battery and motor components to become warm.
Which of the following energy stores does not change during this flight?
the chemical energy stored in the battery
the gravitational potential energy of the drone
the thermal energy of the motor components
the kinetic energy of the drone
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.