Momentum Mountain: Crash Test
PREDICT
How this connects to AP Physics 1 (Topic 4.2, Change in Momentum and Impulse): impulse equals the change in momentum, FΔt = mΔv. For a given Δp, a longer stopping time gives a smaller average force. That is why crumple zones, airbags, and padding protect people. A rebound gives a larger impulse than sticking.