Rigidbody gravity disposition.

I give rigidbody to a gameobject and would like to know how far the object moves when it is affected by gravity, but not when I am moving the object. Since the script is not presented, is there a variable where I can get the amount this object is moved by gravity?

sorry

C:\Program Files\Unity\Editor\Data\Documentation\Documentation\ScriptReference\Rigidbody.html