Originally posted by Death_Kron
reply to post by nik1halo
I've read that if the bullet was travelling at a certain speed it would actually never hit the ground and orbit the earth as others have alluded to above.
That one's easy
gravity = 9.81m/sec^2 on the earth's surface
earth's radius = 6.378 x 10^6 metres
V=sqrt(A.R) = 7910 metres/sec
Naturally you'd need to fire from the top of a high mountain to ensure it didn't encounter any obstacles and there's a little matter of atmospheric drag to deal with as well. Getting outside the atmosphere makes things a bit easier