Recent content by Eunjung

  1. E

    Motion of a rocket after all the fuel is exhausted?

    Oh, it's that simple? Haha, I was thinking rocket science, so it's bound to be complicated. But I guess not.. So it's just simple conservation of mechanical energy? Well, except I need to use the -mgR/r as potential energy.. Thank you!
  2. E

    Motion of a rocket after all the fuel is exhausted?

    But since the rocket is being shot upwards, probably at 90 degrees, it will probably hit the surface of the Earth. The angle is high enough I think. But, assuming that the rocket does hit the surface, how would I calculate the acceleration or velocity at a certain height of the rocket on its...
  3. E

    Motion of a rocket after all the fuel is exhausted?

    Sorry, but can you briefly explain to me why it would be an elongated orbit? I don't quite understand how orbits work. Sorry.
  4. E

    Motion of a rocket after all the fuel is exhausted?

    Will it be regular free fall? I think free fall assumes the same gravitational force for the entire downward motion. However, rockets go high enough to feel a different gravitational force at the top of its motion. As it goes down, it will experience more and more gravitational force. So I...
  5. E

    Motion of a rocket after all the fuel is exhausted?

    Homework Statement Hello, I am currently a gr 12 high school student, and I am stuck in a problem. Please help :) The problem: Consider the motion of a rocket near the surface of the Earth. In this case, mass, in the form of gas is expelled from the rocket to propel the rocket upwards. A...
Back
Top