3.1 Energy and work 3.2 Kinetic energy Bitesize - Kinetic energy 3.3 Momentum Video podcast - momentum explained (at bottom of page) Bitesize - momentum 3.4 More on collisions and explosions Video - Slow motion apple exploding Video - Slow motion explosions in HD 3.5 Changing momentum Video - momentum rap 3.6 Forces for safety Bitesize - momentum and safety Video - Crash test |