Posted by Dwayne on .
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.

Math And Physics 
bobpursley,
Do you know calculus?

Math And Physics 
Dwayne,
Yes