10/22/10
Post date: Oct 22, 2010 8:23:58 PM
No bell ringer. Questions about momentum or impulse-momentum problems?
Quiz 10 - momentum calculations and impulse-momentum theorem
Impulse-momentum and safety features
For something like a car crash, the change in momentum is a set value (your mass times initial velocity drops to zero)
Force and time can be manipulated, and are inversely proportional
Most safety features aim to decrease the force felt by a person and increase the duration of that force
examples: brakes, air bags, crumpling bumpers
Conservation of momentum notes
P. 185: 5-12