This isn't the Kerbal Space Program. It's the Polish space program.
I don't know if this is some new trend or just what a select bunch of bored Polish kids do to pass the time. I don't really care. All I care is that this is science as entertainment.
In this first video, we see what happens when you apply the basic principles of explosive projectiles to a trash can. Making it a trash cannon.
In this second video, we see what happens when you apply the same principles, only instead of using the force to shoot something, it's used to launch something.
Don't try this at home. This looks dangerous as hell.