What happens when you hit the coin at the botton ? why is this so ?

The last coin was removed and the other coins remain on it's position.when you hit the last coin with enough force,such that is removes the last coin overcoming the frictional force quickly enough that the center of gravity is transferred onto the next coin without causing the applied force to affect the position of the rest coins,therefore the four coins has inertia.


Nothing happen beacuse the coin is made by a metal