posted by Dwayne .
Law of Gravitation- Find an expression for the magnitude of the initial velocity that a projectile must possess in order to leave the earth when air friction is neglected.
The gravitational constant for g is, G = 6.67428*10^-11 m^3 Kg^-1 s^-2
Please answer the question fully and please give any helpful websites, thankyou.
Also I know calculus.