Force & Momentum (AQA GCSE Physics): Flashcards

Acceleration

$p = mv$

$F = ma$

$F = \frac{m\Delta v}{\Delta t}$

Force in Newtons (N)

Change in momentum (kg m/s)

Change in time

Bigger force

Reduce momentum change rate, reduce force & injury

Stretch to increase stopping time

Inflate in crash to slow passenger down

Increase fall time, decrease momentum change rate

Crushable foam increases stopping time for head