3/23/11

Post date: Mar 23, 2011 12:48:45 PM

    • Bell Ringer: Sergeant Riggs (75 kg) is at rest when a 28 gram shotgun slug strikes him in the Kevlar vest. Riggs and the bullet move together, flying backward at 8.5 m/s. How fast would the slug have to be moving initially to cause this?

  • 2D conservation of momentum notes

  • P.191:13, P.195:30 due tomorrow