Can a black hole formation be stopped or interrupted My question is a hypothetical: if I were to create a black hole the size of a family house, in New York, is there any way that it can be stopped, or interrupted? If a black hole of this size is formed, will everyone die?
Your black hole is quite massive. It has a mass that is much greater than the mass of the Earth, (about 1000 times the mass of the Earth. And the rest of the Earth isn't moving very fast relative to the black hole.  So in a short amount of time everything falls into the black hole. This will be a quite energetic process with a lot of high intensity radiation being given off. But in short "everybody dies" and quite quickly too.