To every action there is NOT an equal and opposite reaction

To the simple eye, there is a simple law of conservation that tells us that every action causes an equal and opposite reaction. This is simply not true.

Two cue balls on earth with minor external friction from the media (atmosphere) on a pool table. Ball one is stationary, Ball two is charging at the Ball one at a speed of 1km/hr. When they hit, Ball two imparts energy as vibration into Ball one. They actually hit more than once in this instantaneous collision. The vibration causes a reduction in velocity of both objects. Ball one is not traveling at any factor of Ball two's original velocity. Ball two does not go in an exact negative velocity in any factor of the original velocity.

The collision causes a release of energy we refer to as sound. This is not an equal or opposite reaction. This pressure wave did not exist in any state before the collision. This equates to a loss of energy.

There is also a release of heat. This did not exist before the collision. This also equates to a loss of energy

Part of Ball two is left on Ball one and reverse. The amount is determined the densities of the balls and the speed of the collision. This also equates to a loss of energy.

The problem with classical physics is the need to reduce the problem to its simplest form. Instead of looking at the actual problem in its complexities.

We need to know the density, temperature, and magnetic field of the media, balls, and platform so we can know how long the vibration of the balls can continue.

There is no way to determine all the losses of energy in this collision. We cannot add up all the resultant energies to get the original energy.