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Momentum, moments and equilibrium
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Momentum and isolated systems

Momentum and isolated systems

Collision diagram showing a 0.50 kg trolley moving right at 1.20 m/s toward a stationary 0.30 kg trolley, then both stuck together moving right at 0.75 m/s 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.

Momentum, moments and equilibrium Lesson

  1. A Level
  2. /Physics
  3. /Momentum, moments and equilibrium

Step-by-step lessons on Edexcel A Level Physics Momentum, moments and equilibrium. Each one builds up to exam-style questions. 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.

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