Solution: While visiting New York City, you want to see how long it would take a penny to fall from the top of the Empire State Building. If the observation deck of the building (on the 82nd floor) is 320 m high, how long would it take the penny to hit the ground? 

Problem

While visiting New York City, you want to see how long it would take a penny to fall from the top of the Empire State Building. If the observation deck of the building (on the 82nd floor) is 320 m high, how long would it take the penny to hit the ground?