The International Space Station is maintained in a nearly circular orbit with a mean altitude of $330 \, km$ and a maximum of $410 \, km$. An astronaut is floating in the space station's cabin. The acceleration of the astronaut as measured from the Earth is:

  • A
    zero
  • B
    nearly zero and directed towards the Earth
  • C
    nearly $g$ and directed along the line of travel of the station
  • D
    nearly $g$ and directed towards the Earth

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