title: iOS drag objects with inertia
body: <p>I am starting with gestures in iOS and I don't know how add inertia to my movements. Exactly in pan gestures.</p>
  
  <p>In that moment I can move objects with this type of recognizer but I want a little system of physic similar to the effect of the scrolls view. </p>
  
  <p>Someone can help me? Thank you very much</p>