Quote:
Originally Posted by WillAdams
MikefromHC --- you forgot to include air resistance and surface area. An opened book will _not_ be able to travel so fast as to cause significant damage unless it happens to orient itself so that it closes --- even closed, it's not likely to be able to travel so fast as to do the kind of damage which a hard metallic object will.
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I assumed that "same velocity when they hit would cover it.
However it is easy to throw a book that keeps it's covers closed. Send me ten cell phones and I'll throw them and a book against a wall to test the idea.
(Don't complain, I could have said ten hearing aids )
In an airplane it probably does not matter as a book or a hering aid traveling at 100 plus MPH is going to do damage - if it hits you before you hit the front of the plane or vice versa.