bounce or push an object

Does anybody have a script for when an object (lets say a ball) with physics set, touches another object, there will be a bounce or push away?
Kind of like a way, to put a ball in a tube. When the ball touches the bottom, it is repelled or bounces. The action will allow the ball to fall back down and continue the cycle.

Well, you have llGetPos(), which returns the object's position, and you have llDetectedPos(), which you can call in a collision_start() event to get the position of the object you're hitting.

As long as the object you're colliding with is relatively small, and not a weird cut shape, llGetPos() - llDetectedPos(0) will give you a vector away from the object you collided with.

So you could have something like

force fForce = 9.8; // how hard to push the object 
bounce(vector vDir)
{
    vector vImp;
    vImp = llVecNorm(vDir);
    vImp = vForce * vImp;
    llApplyImpulse(vImpFalse);
}

then in your state:

collision_start(integer n)
{
    bounce(llGetPos() - llDetectedPos(0));
}