I'm making a "Can Knockdown" game and I need the rigidbody to move where the player released the mouse(OnMouseUp). Momentarily the Ball moves OnMouseUp because of rigidbody.AddForce(force * factor); and It moves toward the mousePosition but doesn't end up where the mousePosition is. Here's what I have so far in the script.

var factor = 20.0;
var minSwipeDistY : float;
private var startTime : float;
private var startPos  : Vector3;

function OnMouseDown(){
    startTime = Time.time;
    startPos = Input.mousePosition;
    startPos.z = transform.position.z - Camera.main.transform.position.z;
    startPos = Camera.main.ScreenToWorldPoint(startPos);
}

function OnMouseUp(){
    var endPos = Input.mousePosition;
    endPos.z = transform.position.z - Camera.main.transform.position.z;
    endPos = Camera.main.ScreenToWorldPoint(endPos);

    var force = endPos - startPos;
    force.z = force.magnitude;
    force /= (Time.time - startTime);

    rigidbody.AddForce(force * factor);
}