Besides the questions of, “Why would you do that, you sicko!?” and “How did you get the elephant into the elevator?”, this is an amusing (think “Hitchhikers Guide to the Galaxy” British humour) and interesting explanation.
What happens if we throw an elephant from a skyscraper?
Excellent.
Mass X Speed = Force
ma, or mvv.
The phrase that came to mind was “burst radius”.