Monday

September 22, 2014

September 22, 2014

Posted by **David** on Tuesday, April 19, 2011 at 10:19am.

(10 marks).

Kind Regards

- Maths and Physics -
**bobpursley**, Tuesday, April 19, 2011 at 10:25amI wonder what leave the Earth means. If it means to escape the normally inevitable return to Earth, the normal way to find this is to Integrate the potenial energy from Earth to infintity. I am not certain you have had calculus.

NeededEnergy= INT GMe/r dr from r=re to infintity

then, having that number set

1/2 massprojectile*velocity^2 equal to it, and solve for velocity. this is often called "escape velocity"

**Answer this Question**

**Related Questions**

MATH HELP - Law of Gravitation-find an expression for the magnitude of the ...

Math 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 - 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 ...

physics - A projectile with mass of 139 kg is launched straight up from the ...

Physics - A projectile is fired with an initial velocity of v0 feet per second...

Math - A projectile is fired with an initial velocity of v0 feet per second. The...