throw object at specific direction or angle

I am trying to throw a gameobject on swipe direction similar to paper toss game
i tried Addforce but i cant throw at swipe direction please suggest any solution.

bottom line : i want to throw object at enemy by swiping.
please help me through

       initPos = Input.mousePosition;    


         finalPos = Input.mousePosition;
         finalPos = Camera.main.ScreenToWorldPoint(finalPos);
            rigidbodyBox = ball.AddComponent("Rigidbody") as Rigidbody;
         rigidbodyBox.mass = 5;
       ball.rigidbody.AddForce(???????)//what should i pass here //******


Track the movement of the finger on the touch pad. This will allow you to work out the direction of the swipe. Convert that (2d) direction vector into a 3d direction vector and apply the force in that direction.

Maybe something like this could work:

gameObject.GetComponent<ConstantForce>.force = <YOUR SWIPE>.transform.TransformDirection(Vector3.forward);

It works for my as I have a ball that I throw in my arrows direction (which I can control with Left and Right keys). For me it looks like this:

Ball.GetComponent<ConstantForce>.force = Arrow.transform.TransformDirection(Vector3.forward);

This will throw in the direction of the arrow.