All my revision videos can be found here: Chapters: 00:00 Intro 00:10 Newton's First Law 00:38 Newton's Second Law 01:46 Newton's Third Law 02:21 Weight and Normal Reaction 03:29 Non-constant mass 07:09 Impulse 08:04 Force against Time graph 09:33 Momentum 10:00 Conservation of Momentum 12:31 Elastic and Inelastic Collisions 14:00 Momentum in 2D This is excellent A Level Physics revision for all exam boards including OCR A Level Physics, AQA A level Physics, Edexcel A Level Physics, CIA Cambridge International A Level Physics, Eduqas etc.