Momentum and isolated systems
Momentum and isolated systems
Momentum is the quantity of motion carried by a moving object, defined by p=mvp = mvp=mv. Because velocity has direction, momentum is a vector, so choosing right as positive makes leftward momentum negative.
Step-by-step lessons covering Edexcel A Level Physics Momentum, moments and equilibrium for A Level Physics. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks across the three papers require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.