diff --git a/src/break_out/model/Ball.java b/src/break_out/model/Ball.java
index 1cddaf8..6700b3d 100644
--- a/src/break_out/model/Ball.java
+++ b/src/break_out/model/Ball.java
@@ -92,4 +92,21 @@ public class Ball implements IBall {
 		}
 	}
 
+	/**
+	 * test if Ball hits paddle
+	 * @param paddle paddle which will be tested
+	 * @return true when ball hits paddle
+	 */
+	public boolean hitsPaddle(Paddle paddle) {
+		return false;
+	}
+
+	/**
+	 * Ball got hit by Paddle paddle
+	 * @param paddle hitbox mechanism of paddle
+	 */
+	public void reflectOnPaddle(Paddle paddle) {
+		return;
+	}
+
 }
diff --git a/src/break_out/model/IBall.java b/src/break_out/model/IBall.java
index a2ce223..8474dec 100644
--- a/src/break_out/model/IBall.java
+++ b/src/break_out/model/IBall.java
@@ -7,4 +7,8 @@ public interface IBall {
 	public void reactOnBorder();
 	public Position getPosition();
 	public Vector2D getDirection();
-}
+
+	// Exercise 2
+	public boolean hitsPaddle(Paddle paddle);
+	public void reflectOnPaddle(Paddle paddle);
+}
\ No newline at end of file