Posted by **AKUMA** on Thursday, April 28, 2011 at 7:27am.

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 negelcted.

The gravitational constant is given as G= 6.67428*10^-11 m^3 kg^-1 s^-2

Please give lots of details in answer

- MATH HELP -
**bobpursley**, Thursday, April 28, 2011 at 8:57am
I will be happy to critique your work.

You need to relate initial KE to total gravitational PE from the surface of Earth to infinity.

- MATH HELP -
**AKUMA**, Thursday, April 28, 2011 at 10:40am
Can you please give me a website that would help answer this question

## Answer This Question

## Related Questions

- Math - find an expression for the magnitude of the initial velocity that a ...
- Math HELP PLEASE - find an expression for the magnitude of the initial velocity ...
- Maths and Physics - Law of Gravitation- Find an expression for the magnitude of ...
- Math And Physics - Law of Gravitation- Find an expression for the magnitude of ...
- MATH HELP - Law of Gravitation- Find an expression for the magnitude of the ...
- Math BOBPURSLEY HELP HELP HELP HELP - Law of Gravitation- Find an expression for...
- Math And Physics - Law of Gravitation- Find an expression for the magnitude of ...
- physics - A projectile with mass of 139 kg is launched straight up from the ...
- Physics (Gravitation) - 2. To leave the gravitational ﬁeld of a planet, a...
- Math - A projectile is fired with an initial velocity of v0 feet per second. The...

More Related Questions