(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

a satellite is set to orbit a planet of mass 4X 10^20 kg .

It is placed at a distance of seperation of 10^7m with a velocity of 30 degrees to the line connecting the center of the planet and the satellite. What will be its eccentrity fo orbit? (Answer is .89)

2. Relevant equations

ME = KE + PE

KE = 1/2 mv^2

PE = -GMm/r

3. The attempt at a solution

I did 40m/s *sin (30) = vertical velocity.

Then, I plugged it into the equation -GMm/r = .5m(40m/s *sin (30))^2 + -GMm/r

I didn't get the answer though...

please help!

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# Homework Help: Elliptical orbit question

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