title: Verlet integrator + friction
body: <p>I have been following "<a href="http://www.gamedev.net/page/resources/_/technical/math-and-physics/a-verlet-based-approach-for-2d-game-physics-r2714" rel="nofollow">A Verlet based approach for 2D game physics</a>" on Gamedev.net and I have written something similar.</p>
  
  <p>The problem I am having is that the boxes slide along the ground too much.
  How can I add a simple rested state thing where the boxes will have more friction and only slide a tiny bit?</p>