If an unstoppable object collided with an unmovable object, what would happen?
Usually, one would say that a rip in the space-time continuum would occur and that's the end of the universe as we know it. But physics saves the day with loop holes.
If the collision is perfectly elastic, then both objects will not have a problem. All that will happen is a change in direction of the moving object. The unmovable object will not move. The unstoppable object will experience a massive acceleration (virtually infinity), and "bounce" off the unmovable object in the opposite direction. Nature is untouched, and those two objects will never encounter each other again.
If the collision is NOT perfectly elastic, then a few things can happen:
1. an infinite amount of heat will be released from the collision as the change in energy attempts to stop the unstoppable object or move the unmovable object. The universe is toasted.
2. Newton's existence gets obliterated as his first two laws simultaneously destroy each other. Our understanding of the universe is severely limited. Refer to outcome 1.
3. The 1/1,000,000,000,000 that the two objects will just phase through each other will save the day. If not, refer to outcome 2.
4. If you're reading this, this scenario hasn't happened yet. Either that, or we just haven't noticed that we're dead yet.
The conditions of space make the perfectly elastic collision highly likely. In other arenas, this event has already happened. Man married woman. This is not perfectly elastic. The infinite change/loss in energy is known as raising children.
