Thursday

December 18, 2014

December 18, 2014

Posted by **Laramie** on Friday, March 26, 2010 at 9:52am.

Answer in km/s.

I have used the velocity of escape = (square root of) 2(g)(m1)(m2)/r but keep getting the wrong answer.

1.21e5 km/s and 4.7e3 km/s are two of the answers I've been getting. Help?

- physics: escape velocity -
**bobpursley**, Friday, March 26, 2010 at 10:22amPE at surface=KE at launch

GMp/radius = 1/2 v^2

v= sqrt(2GMp/r) where G is 6.67E-11

v=sqrt(2*6.67E-11*1.3E22)/1.18E6)

You seem to have difficulty operating your calculator. Put this into the Google search window:

sqrt(2*6.67E-11*1.3E22/1.18E6)

- physics: escape velocity -
**Laramie**, Friday, March 26, 2010 at 11:33amHmm. I wonder how I can correct my poor usage. Thank you very much!

**Answer this Question**

**Related Questions**

physics - You are on Mars and would like to send a probe into space so that it ...

Physics - You are on the Moon and would like to send a probe into space so that ...

physics - calculate the escape velocity for the following; assume a launch from ...

physics - The acceleration due to gravity near a planet's surface is known to be...

physics - A 7.00 104-kg space probe is traveling at a speed of 12000 m/s through...

physics - A 5.50 104 kg space probe is traveling at a speed of 11000 m/s through...

physics help!! - A 5.50 104 kg space probe is traveling at a speed of 11000 m/s ...

Physics - A 4.5 104-kg space probe is traveling at a speed of 15000 m/s through ...

Physics - A 5.0 104 kg space probe is traveling at a speed of 11000 m/s through ...

Physics - A 5.0 104 kg space probe is traveling at a speed of 11000 m/s through ...