hi! Long time ago back in 1991, we recladded the Amoco Bld. in Chicago. the building is 1137 tall. I was working next to a guy on the 81st floor.(building is 84 stories tall)who dropped a bolt by accident, this was on the south elevation,and there was a fountian below us. after counting six seconds there was a gyser of water 4 storys high as the bolt went into the fountain.If it takes 11 seconds to reach terminal velocity with a speed of 110 mph in a stable free fall position, then that bolt had to be doing close to 150 or so when it hit due to the mass and bulk of the bolt.After all the bolt free falled for 6 second in 1000ft. A penny on the other hand has a small surface and would flutter down way less than 100mph at that hieght. That is all i have to say about that.(talks like forest gump)