A robotic camera travels along a horizontal rail. The camera has a mass of 4.5 kg and initially has 400 J of energy in its kinetic store. As the camera slows down, the energy in its kinetic store decreases by 175 J.
Calculate the new speed of the camera.
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.