Unity 5 arrow shooting

I have a sprite that rotates based on holding a mouse button. So once the left mouse button is released he shoots an arrow. The rotation of the arrow is good. ( maybe it misses couple of degrees but its fine ) . But here is the problem i have an AddForce function and that Add Force function needs to shoot based on rotation of the Arrow. Keep in mind that i want my arrow to have a real curved flying. Here is the code.

 using UnityEngine;
 using System.Collections;
 
 
 [RequireComponent(typeof(PlayerController))]
 public class ArrowControl : MonoBehaviour {
 
     public float thrust = 250f;
 
     private Rigidbody2D arrow;
 
     // Use this for initializatio
     private bool flight;
 
 
     void Start () {
         arrow = GetComponent<Rigidbody2D> ();
         flight = true;
     }
     
     // Update is called once per frame
     void Update () {
 
         ArrowMotion ();
     }
 
     void ArrowMotion(){
 
         if (Input.GetMouseButtonUp(0)){
             flight = true;
             if(flight){
             
                 arrow.AddForce(Vector2.right * thrust);
                 flight = false;
             }
 
         }
     }
 
         
 
     }

And the second script

 using UnityEngine;
 using System.Collections;
 
 
 
 public class PlayerController : MonoBehaviour {
 
             
         //Public Vars
         [SerializeField]
         public Camera camera;
         [SerializeField]
         public Rigidbody2D arrow;
         public bool shoot;
         public Vector3 mousePosition;
         public PlayerController play;
         //Private Vars
         
         private Vector3 direction;
         private float distanceFromObject;
         private Rigidbody2D rigidbody;
         private bool isAiming;
         private Animator anim;
 
 
 
 
 
     void Start() {
         rigidbody = GetComponent<Rigidbody2D> ();
         anim = GetComponent<Animator> ();
         shoot = false;
     }
         
     void FixedUpdate() {
 
         HandleRotation ();
        
 
     }
 
     void Update(){
         HandleShoot();
     }
     
 
     void HandleRotation(){
         
         if (Input.GetMouseButton(0)){
 
             isAiming = true;
             //Grab the current mouse position on the screen
             /*mousePosition = camera.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y, Input.mousePosition.z + camera.transform.position.z));
             
             //Rotates toward the mouse
             rigidbody.transform.eulerAngles = - new Vector3(0,0,Mathf.Atan2((mousePosition.y - transform.position.y), (mousePosition.x - transform.position.x))*Mathf.Rad2Deg + 180); */
             Vector3 pos = Camera.main.WorldToScreenPoint(transform.position);
             Vector3 dir = Input.mousePosition - pos;
             float angle = Mathf.Atan2(dir.y, dir.x) * Mathf.Rad2Deg;
             transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward);
             
         }
         
     }
 
     void HandleShoot()
     {
         if (isAiming) {
             anim.SetBool("Aiming", true);
         }
         if (Input.GetMouseButtonUp (0)) {
             isAiming = false;
             anim.SetBool ("Aiming", false);
             shoot = true;
         
             if (shoot) {
                 Vector3 pos = Camera.main.WorldToScreenPoint(transform.position);
                 Vector3 dir = Input.mousePosition - pos;
                 float angle = Mathf.Atan2(dir.y, dir.x) * Mathf.Rad2Deg;
 
                 Instantiate (arrow, rigidbody.position, transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward));
                 shoot = false;
             }
         }
     } 
 }