1. Impulse Impulse - the change in __________. Hitting something for a certain _____ _______. I = Units = The greater the force = the ____ the time interval. SO: the _____ damage that is done

2. Examples How do airbags work? Without air bags, you hit something and stop Stopping an object gradually; Harder surfaces = _______ time, ______ damage Impulse Example: Haystack or Brickwall?

3. Impulse Impulse - the change in __________. Hitting something for a certain _____ _______. I = Units = The greater the force = the ___________ the time interval. SO: the ________ damage that is done momentum time period (Force) x (time interval) (F)(∆t) N s smaller more

4. Examples How do airbags work? Without air bags, you hit something and stop Stopping an object gradually = Harder surfaces = _______ time, ______ damage Impulse Example: Haystack or Brickwall? They extend time so force is less. in a brief time period. shorter reduces damage more WHY??