How do I create good ball movement for a Pong clone? C2

Hi Guys'n'Gals,

Can you please advise on best method to proceed with this?

At the moment, I have a 'round' ball sprite (with round collision polygon)... bullet behaviour, which starts on random direction. Once it bounces off walls (TileBackground), it does some strange things. Sometimes it glides in a straight line or gets trapped in a horizontal loop (if that makes sense).

Is it possible to use physics instead?

Thanks,

Roberto