Tim, consider this:

Fire a cannon ball exactly horizontal (level) with the earth. At the exact
instant the cannon ball leaves the muzzle, drop another cannon ball from the
same height. The 2 cannon balls will reach the earth at the same time.

Bob Swinney
"Tim Williams" wrote in message
...
"Chris Oates" none wrote in message
...
Yes, same velocity they went up with

Nope. As soon as it leaves the barrel it's slowing down, as, AFAIK,
bullets are supersonic, and I know of nothing that has a terminal speed
greater than the speed of sound, at least at this size! After it reaches
the apex, where its vertical speed is zero, it is now speeding up, and
will slowly (exponential decay style) approach terminal speed. Donno what
number that is, though.

Tim

--
"That's for the courts to decide." - Homer Simpson
Website @ http://webpages.charter.net/dawill/tmoranwms