launch speed

[wilmerena]

Does anyone know the formula to find launch speed?

[arildno]

Launch in order to do accomplish what?

[wilmerena]

im sorry i think i got it.

its of a projectile that rises vertically above the earth to an altitude equal to one earth radius

is it:
square root of: (Universal gravitational constant of earth) x (mass of earth) all divided by Radius of earth?

[faust9]

v_{orbit}=\sqrt{\frac{Gm}{r}}


Where G is universal gravitational constant, m is mass of orbiting body, and r is radius between bodies.