title: calculating force, velocity and distance in chipmunk
body: <p>I am newbie with Cocos 2D, Chipmunk and Box 2D.</p>
  
  <p>I have started basic docs and started to develop games.</p>
  
  <p>Currently I am working with chipmunk. </p>
  
  <p>I stuck at few points And they are as follow.</p>
  
  <p>In my application, there is a player Who kick the soccer ball and ball will move to distance according to force applied by kick of player. </p>
  
  <p>I am confused for .. </p>
  
  <ul>
  <li><p>How do I make players whole body static and can make his one lag moveable to let it kick the ball.</p></li>
  <li><p>How do I calculate force and vector and distance etc. </p></li>
  <li><p>How do i move to next screen if my ball goes to out of current screen.</p></li>
  </ul>
  
  <p>Please let me know the url from which I can easily get all type of examples for chipmunk application.</p>