- #1

JoeyBob

- 256

- 29

- Homework Statement
- See attached picture

- Relevant Equations
- change Ek + change Ep =0, Ek=1/2mv^2, Ep=-GMm/r

So what I did first was calculate the initial and final potential energies with Epi=-9.433*10^11 m and Epf = -1.503*10^12 m.

Then I found change in potential energy, -5.597*10^11 m.

Using this I determined the change in kinetic energy, 5.597*10^11. I then added this change to the initial kinetic energy I calculated (103.68 m) to get a final Ek of 5.597*10^11 m.

Then I calculated the final velocity, Ekm=v^2*0.5, finding that v=1058017, which is obviously way higher than the right answer.

Where am I going wrong here? Is there some non conservative work or something?

Then I found change in potential energy, -5.597*10^11 m.

Using this I determined the change in kinetic energy, 5.597*10^11. I then added this change to the initial kinetic energy I calculated (103.68 m) to get a final Ek of 5.597*10^11 m.

Then I calculated the final velocity, Ekm=v^2*0.5, finding that v=1058017, which is obviously way higher than the right answer.

Where am I going wrong here? Is there some non conservative work or something?