Force and the rate of change of momentum
A force changes momentum; the longer the change takes, the smaller the force. That is how crumple zones, airbags, helmets and crash mats protect you.
You will be able to
- Use F = mΔv ÷ Δt, changing ms to s
- Find the change in momentum when something bounces back
- Explain how safety features reduce the force by increasing the time
25 minutes, 9 exam-style questions.