2d character facing right/left problem

I have a Projectile attached to my Player. I am trying to change direction of my projectile but it seems I am forgetting something. I've tried declaring bools, if/else statements but it doesn't change direction. My clean script (without any attempt of changing direction) is:

   public float rocketSpeed;
   Rigidbody2D myRB;

 void Awake () {
         myRB = GetComponent <Rigidbody2D> ();
         myRB.AddForce (new Vector2 (1, 0) * rocketSpeed, ForceMode2D.Impulse); 
     }
     

 public void removeForce ()
 {
     myRB.velocity = new Vector2 (0, 0);
 }

I'd really appreciate some help. I am getting desperate..