ball bouncing C#

Hello!
I'm trying to create a pong game and I have an problem with the ball bouncing..
The ball is losing energy.
I have a physical material (2D) that I applied to all the objects but it still not working..
**The game is 2D (I don't have any 3D models at the game)**

How can I fix this?
thx for help!

 

Does they have RigitBody component?

 

the ball and the paddles yes.
the walls no.

 

I had a similar problem. Instead of trying to get the Physics 100% right (which I didn't want to spend the time on) I attached this to my ball instead.

Code (csharp):

1.  
2. // Adjust this to adjust speed of the ball.
3. public float ballSpeed = 5;
4.  
5. void FixedUpdate() {
6.   rigidbody.velocity = rigidbody.velocity.normalized * ballSpeed;
7. }
8.  

EDIT: I haven't had a chance to work with the 2D physics yet, so that code might be a bit different.

 

thanks!!
It is works!

(For 2D it is very simple to change:

Code (csharp):

1.     void FixedUpdate()
2.     {
3.         rigidbody2D.velocity = rigidbody2D.velocity.normalized * ballSpeed;
4.     }