Yes, it's extremely dangerous and can be fatal. The force of hitting the ground from any significant height of a building can cause life - threatening injuries.
You can't survive. A 5-story drop is way too high. The force of the landing would cause massive trauma to your body, and it's very unlikely you'd make it out alive.
Definitely. A 5-story drop has a high chance of resulting in death. The force of the landing can cause irreparable harm to your body and vital systems.