Ball Physics

i want to make game like pool. there will be just one ball and it will move forever. i used a cube for floor, and 4 cubes for borders. i used box collider for border cubes. there is no physical material for this cube. i added a sphere to the scene. i added sphere collider and rigibody to the sphere. other settings are like attached screenshot. it does not work like hit ball on a pool. what can i do?