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Author Question: A rocket coasts in an elliptical orbit about Earth. To attain escape velocity using the least amount ... (Read 30 times)

mikaylakyoung

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on: Jul 29, 2018
A rocket coasts in an elliptical orbit about Earth. To attain escape velocity using the least amount of fuel in a brief firing time, should it fire off at the apogee, or at the perigee? (Hint: Let Fd =  KE guide your thinking.)
 
  A) perigee, where it is closest and fastest
  B) apogee, where it is farthest and slowest
  C) same at either location
  D) same at any location

Question 2

Escape speed from the Moon is
 
  A) about the same as from Earth.
  B) much greater than from Earth.
  C) much less than from Earth.


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mcabuhat

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: C


mikaylakyoung

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

steff9894

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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