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It never works how you expect it to work. (startrek.website)

submitted 11 months ago by [email protected] to c/[email protected]

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[–] [email protected] 10 points 11 months ago (2 children)

Nah, bullets don't go anywhere near escape velocity. Escape velocity is ~11.2km/s and the fastest bullets (FAR faster than most) only go ~4000f/s, which is barely over~1.2km/s.

Any bullet that is shot up will come back down, and not terribly far away, either. Even the biggest artillery systems only have barely over 100km range.

[–] [email protected] 2 points 11 months ago (2 children)

What if my gun is a multi kilometre long railgun?

[–] [email protected] 4 points 11 months ago

You're compensating for something.

[–] [email protected] 4 points 11 months ago

The US government tried that a long while back... The company Spinlaunch is currently working on yeeting stuff into orbit with a centrifuge... So yes, some unusual methods can work.

[–] [email protected] 1 points 10 months ago (1 children)

The moon isn't at escape velocity either (source: It's still there).

Doesn't really change the numbers probably, but you'd need a little less than 11.2 km/s to reach the moon.

[–] [email protected] 1 points 10 months ago

Wrong, that is not how orbital mechanics work. The moon IS below escape velocity, but it's orthogonal to the force of gravity. It also has a 240000 mile head start on getting away, yet it's STILL not escaping while traveling over 1km/s.

Shooting a bullet straight up, you would have to shoot faster than escape velocity for it to even reach the moon when using simple ballistic calculations.

There is A LOT of energy in those thousands upon thousands of miles.