Momentum (Edexcel GCSE Physics): Flashcards

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Momentum
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What do all moving objects have?

Momentum

Momentum of stationary object

Zero

Formula for momentum (pp, mm, vv)

p=m×vp = m \times v

Units of momentum

kgm/skg m/s or kgms1kgms^{-1}

Conservation of momentum principle

Total momentum before = total momentum after

Momentum conserved in collisions/explosions

Always (when no external forces)

What type of quantity is momentum?

Vector

Newton's 2nd Law in terms of momentum

Force = rate of change of momentum

Newton's 2nd Law formula with momentum

F=(mvmu)tF = \frac{(mv - mu)}{t}

mumu in Newton's 2nd Law momentum formula

Initial momentum

mvmv in Newton's 2nd Law momentum formula

Final momentum

System where momentum conservation applies

Closed system

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