It depends on the elaticity of the ball and the corner. When playing Billiards, you can hit the corner of a pocket and have the ball bounce straight back along the line it came. It is quite easy to do.
If both items have no elasticity, ie. glass marble, steel triangle, it is still minutely possible that it will hit in the exact right spot to make it rebound straight back.
Then there is always the possibility that the corner is so sharp, that the ball gets impaled and is stuck. ;)
If both items have no elasticity, ie. glass marble, steel triangle, it is still minutely possible that it will hit in the exact right spot to make it rebound straight back.
Then there is always the possibility that the corner is so sharp, that the ball gets impaled and is stuck. ;)