public GameObject ball;

	// Use this for initialization
	void Start () {

	}

	// Update is called once per frame
	void Update () {
		if (Input.GetKeyDown(KeyCode.Space)) { //have we pressed the key down if so the intantiate the object.
			Instantiate (ball, new Vector3(Random.Range(0,0),3f,0),Quaternion.identity);
		}
	}