If a black hole the size of a cherry hits the Earth at half light speed what will happen?

Answer 1

It will either burrow inside the earth and feed off of our planets matter untill the earth collapses or it the speed is high enough it will pass right through and leave a huge hole.



A cherry sized black "hole" has the gravitational energy of a planet three or four times bigger then earth. so it would be like two planets slamming into one another, except one is really tiny

Answer 2

I do not not believe this is possible. Due to the fact that you would not be able to contain enough mass in objects so small no matter how dense to create the gravitional forces of a black hole. Now in theory if it was possible. I would assume it wouldn't matter how large the black hole is. The gravity and suction of the black home would instantly consume you. For something to be a black hole it has to have gravity strong enough that not even light can escape it.. Any black hole will consume all matter with in the reach of it's gravitional force. I think what your more so interested in and questioning is what would happen if one was hit with small super dense objects at high speeds. Lets say the matter from a Neutron Star for example. I believe even just a pin head would cause a rather large explosion. A peanut would definitely cause an explosion. The reason is those objects are so dense and heavy that it would take a TON of energy to get them to move at the speeds of a bullet. When that energy and matter collides with an object such as a human it will create a massive release of that energy.

Answer 3

Several things would happen:

1. It would drill an almost perfect hole through the earth and exit out the far side at nearly the same speed. Only mass directly in front of the black holes path would be scooped up.

In addition, it would vaporize matter close to its path, and melt matter farther from its path.

2. A cherry-sized black hole would be just about as massive as the earth, maybe a little bigger. A black hole as massive as the earth would be about 1.3 cm radius

3. The black hole would have a significant effect on the earth for less than 1/2 a second. (From 5r away from earth's center to 5r on the other side).

4. Those living away from the impact site would feel a major earthquake like impulse force. Big earthquakes can generate a 1 g force. This is the max force someone 1 r away from the path of the black hole would feel. But this force would be far less time than a comparable earquake. Most people would probably say, "what was that." But there would not be much damage or life lost.

The black hole, however, would also generate earthquakes waves in the earth's core and mantle so the shaking would go on for quite some time and this shaking might be the equivalent of a major earthquake or possibly greater. It would probably go on for an hour or more. The black hole would generate large tidal forces (for a short time period) as it passed through the earth. Earth would ring like a bell as a result.

5. As you get closer to the impact and exit points, there would be greater impulse forces. Lets assume you were 600 km from the impact site, you would experience a force of 100 g for a very short period of time. Probably survivable, because it would be so short in time, but wide scale destruction.

6. Destruction would grow as you appoached the impact site. At 60 km, the impulse force would be 10000 gs, and at 6 km, the impulse force would be 1000000 gs, all exceedingly short, but still ...

7 At some point as you approach ground zero, you would get a thermal heating, ground melting, mushroom cloud. A large crater on both sides of the earth. Possible volcanic activity as an aftereffect. If it hit the ocean, you would expect tidal waves.

For comparison, I'd expect the same sort of destruction if a block of dark matter the size of Mt. Everest, and with the same mass and speed as your black hole hit the earth.

Answer 4

If a black hole the size of a cherry hit the earth then I think speed would be irrelevant as the result would probably the end of the earth as we know it.

Good luck

Answer 5

you will definatly have better things to do with your time

Answer 6

we would all be sucked into it...