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ProudPilot · April 26th, 2008, 01:10

Well a lot of really great posts. Mine will be short and simple. You need a force to overcome -9.8m/s/s (that's acceleration guys) which is gravity. So using F=ma, solve for at least 9.800000~1m/s/s and you can get to space.

As for railguns, or horizontal flight, the magic number is mach 25 where the earth should start to fall away while maintaining a stable pitch. It varies a bit based off of the altitude, but if you can get a cannonball going that fast, it will come back to hit you.

April 26th, 2008, 01:10	#16
ProudPilot Junior Member Join Date: Apr 2008 Location: Grand Forks, ND Posts: 39	Re: Escape Velocity Well a lot of really great posts. Mine will be short and simple. You need a force to overcome -9.8m/s/s (that's acceleration guys) which is gravity. So using F=ma, solve for at least 9.800000~1m/s/s and you can get to space. As for railguns, or horizontal flight, the magic number is mach 25 where the earth should start to fall away while maintaining a stable pitch. It varies a bit based off of the altitude, but if you can get a cannonball going that fast, it will come back to hit you.