The third Newton’s law and law of momentum conservation.

The third Newton’s law declares what each reaction of forces should be symmetrical.
-F=F
where: F - reaction forces of objects

The consequence of this is law of momentum conservation.

-F=F
-mv*t=mv*t
-mv=mv
-P=P

where: F - reaction forces of objects, m - mass of objects, v - velocity of objects, t - time trame of action, P - momentums of objects.

This consequence should be used for case where objects induce same identical motions and this does not cover the case where objects induce different type of motions. In experiment 2 thin cylinders induce different type of motions and this simple consequence should not cover this objects repulcing action. Therefore, for correct explanation of experiment 2 needs to use prime third Newton’s law and identify all reaction forces by this law. The consequence law of momentum conservation where objects have symmetrical behavior should not be used for this objects repulsing case.