Sir, that is quite the run on sentence.
So basically you have a ball on a box. When the box is clicked it's destroyed and the ball falls. The ball then hits a slope, bounces and then hits a triangle.
At least that's the desired effect. So you're saying that when the ball hits the slope it gets destroyed instead of bounces? Again as stated in previous posts it's near impossible to guess what's wrong without seeing a capx. Making a copy of it and removing everything you don't want to share is one option.
A few points though.
* You said you gave the ball the physics behavior and then the bullet behavior do you can tell it to bounce. A rule of thumb is to not use other behaviors with the physics behavior, otherwise they'll clash. Furthermore the physics behavior should handle the bouncing automatically. The only parameter you have to control the amount of bounce is the elasticity of the ball and slope. After that motion should follow a realistic path.
* Unless you have an event to destroy the ball I don't think it's being destroyed. Rather I'd say it's flying off screen at a high rate of speed. Just a guess though.