tyree wrote:
The coin lands on the deck of an aircraft as it inverts into a negative-G dive. This leads to an endless debate over which side of the coin is "up". Therefore, the "correct" answer is infinit, or two, take your pick.
I choose two, it having never been proved that a coin has ever landed on the "edge".
I have had a coin land on it's edge and roll away. Amazingly enough it actually stayed that way. I also had one land that way and roll over to a wall and lean. So is that another possiblity?