Physics › Section F · Momentum and collisions › Topic F.1
Momentum, force, and impulse
A slow lorry and a fast cricket ball are both hard to stop, for different reasons. Momentum captures both mass and velocity in one quantity, and impulse explains how forces change it, which is the physics behind airbags and crumple zones.
In this topic
- Hard to stop
- Momentum is mass times velocity
- Momentum and kinetic energy
- Newton's second law in momentum form
- Impulse equals change in momentum
- Force-time graphs
- Worked example: a ball that rebounds
- Airbags and crumple zones
- Worked example: the value of an airbag
- Worked example: a kick from a graph
- Common mistakes to avoid
- Key takeaways
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