Launch speed

1. Jul 22, 2004

wilmerena

Does anyone know the formula to find launch speed?

2. Jul 22, 2004

arildno

Launch in order to do accomplish what?

3. Jul 22, 2004

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?

4. Jul 22, 2004

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.