What would happen if two unstoppable forces collide?
453922
A philosophical question. In physics no force is unstoppable.
227548
nothing you can hit them both with a big swingggggggg....................sorry i\njust fell off my chair
382778
There could be more than one universe, to assume otherwise is making the mistake of thinking that there are scientific facts. There are only scuentific theories, NOT facts.\n\nIt is possible they could collide as galaxies do, but like galaxies they may simply pass through each other.
55202
The two best answers to this paradox are basically one of logic and one of semantics, and they each say that the question doesn't make sense.\n\nThe answer using logic is that if such a thing as an irresistible force exists, then no object is immovable, and vice versa. It is logically impossible to have these two entities (a force that cannot be resisted and an object that cannot be moved by any force) in the same universe. \n\nThe answer using semantics is that if there is such a thing as an irresistible force, then the phrase immovable object is meaningless in that context, and vice versa, and the issue amounts to the same thing as asking, e.g., for a triangle that has four sides.
111016
The two would merge, theoretically.  But, keep this in mind.  In order for an object to be either immovable or irresistable, the masses would have to be infinite.  This is an impossible scenario, so we really can only theorize as to the results.  The result would be the opposite from what was described in the first answer.  Instead of energy  being turned into mass, I think you'd find that both the mass with irresistable force and the immovable mass would be both turned into energy, in the forms of sound, heat, light, etc.  Comprehend the results.  Infinite mass = infinite energy!!
1018053
there are problems in your theory... first what can be considered FIXED in the universe. nothing is fixed... its a relative term in this situation.  Also an unbreakable string is an impossibility. There is no such situation where something is completely unbreakable. Even the smallest particle can be broken by enough outside force. \n\n I would like to take your idea to a different level. Lets say it was possible to have an unbreakable string.  Send the ends of this string into 2 different black holes.  Visualize 2 black holes connect by a string.  To answer your first question about seeing the string... You would able to see it until it got to the point where the light wouldn't be able to escape the gravitational pull of the black hole... In theory if the string is unbreakable then it will be impervious to heat and pressure... so it wont melt and crush... Eventually the constant pressure on the string would bring the 2 black holes together. Until the combined gravitational pull of both black holes on each other cause a cataclysmic event where the combined speed and pull of the black holes would cause the entire universe to collapse on itself... and everything as we know it would cease to exist
84559
Both marbles will hit the ground at the same time, but one will roll along farther.\n\nIn short, the vertical force from gravity is the same for both marbles.  The one hit sideways just has an additional horizontal velocity in addition to its vertical acceleration.
299265
The answer has to be A.\nThe time will be the same because Gravitational force does not depend on the mass of the object, since they start with same velocities and accelerate with the same rate they must hit the ground at the same time.\n\nAnd it obviously has to be the same distance because if it wasn't then they would never hit the ground at the same time in the first place. That would happen because if 2 bodies start with the same speed and have the same acceleration but different displacements then their time has to be different.
1187275
Good question, lol, I would have to say both would hit each other at the same time and get knocked out at the same time, so a TIE.
1117424
Here's what probably happened:  Planets normally move in an orbit around a star (sun).  There is the occasion that a rather large astroid may hit a planet knocking it out of sync with its orbit.  Based on that theory, the wobble produced could force the planet out of its orbit all together.  Then, yes, it would be possible for planets to collide.  Could you imagine what that might look like?  With that said, I'd say that there is an off chance of the same happening to earth.
969523
if they are both going at the same speed, then the mass,size of the wheel and other considerations have already been take in account, so they both should arrive at the same time.\nGod bless,\ngabe
1034953
All answers to this question are false, since it contains an inherent contradiction.\nIf something in the universe is unstoppable then by definition there can exist no unmoveable objects, and vice versa.\nThey are two mutually exclusive concepts.
54780
Two possibilities: They would remain at the point of their meeting forever or the unstoppable force would disperse into smaller unstoppable forces and move on in different directions.
904552
Both balls would hit the rocks at the same speed.\nBall #1 would leave your hand travelling straight up at speed 'u'. It travels up, stops, and starts plummeting back to earth. When it reaches the height at which it left your hand, it is travelling at speed 'u' straight down. The speed that it hits the rocks at is u+(time x 10m/s/s).\n\nBall #2 would leave your hand travelling straight down at speed 'u'. The speed that it hits the rocks at is u+(time x 10m/s/s). It is the same speed.
779101
Yes, If the mass of the everything doubles than whole universe will get shrunk and the heavenly bodies in the space will collide and get destroyed. because more the mass more the gravitation force. chances gettin hitted by a asteroid will increase. People will find difficult to walk, aeroplane will crash down and satellites may fall down. we've to give the rockets more spped currentl which is 11.2 km/s. so many things happen.
546536
Take two objects of the same mass moving towards each other (in opposite directions) with the same speed. Let's say one object has momentum of p and the other -p. The total momentum of the system (p-p) is 0. When they collide, they both stop moving and the total momentum of the system is still 0.
12468
It's not specified that the object is unbreakable, so it would break. I doubt the pieces of the object would continue to be immovable, so bits of the immovable object would be flying everywhere. Serves it right for being so stubborn and not moving.\n\nIn the case of theft, the unstoppable force would either come back later with a bigger screwdriver, or steal the keys.