Converting Mass and Energy with E=mc2 (A2 Physics Edexcel)

A2 A level Physics Edexcel. Converting energy and mass using Einstein’s E=mc2. Discussion of the principles of special relativity. Use of binomial expansion and the Lorentz factor to derive that energy is rest mass and kinetic energy. For A grade. High level challenge and cross curricular links. Explanation of electron volts as units for mass and discussion of the unified mass constant. Example questions and worked solutions. Long answer 6 mark explanation step by step hints and model answers.