State the equation that relates the kinetic energy (EkE_kEk), mass (mmm), and speed (vvv) of an object.
An automated delivery drone is cruising horizontally at a constant speed of 8.0 m/s8.0\text{ m/s}8.0 m/s. Given that the kinetic energy of the drone at this speed is 112 J112\text{ J}112 J, calculate its mass.
44 exam-style questions on AQA GCSE Physics 1.1 Energy changes in a system, and the ways energy is stored before and after such changes, covering 1.1.1 Energy stores and systems, 1.1.2 Changes in energy, 1.1.3 Energy changes in systems, and 1.1.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.