Racket.cs

using UnityEngine;
using System.Collections;

public class Racket : MonoBehaviour {

	// Use this for initialization
	void Start () {
	
	}
	
	// Update is called once per frame
	void Update () {
	
	}

	public void OnCollisionEnter2D(Collision2D collision2D) {
		collision2D.gameObject.GetComponent<Rigidbody2D>().AddForce (Vector2.up * 100.0f);
	}
}