I've seen numerous things in movies and shows that feature bullets that have impacts on people, and objects. For an example, when somebody gets shot, you see their clothes rip when they get shot and blood come out during the shot. Another example is, a couch getting shot at, and the couch rips in areas it gets shot at. I've also wondered how wood breaks all of a sudden when it gets shot at. If anybody can explain this to me that would be great.