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video clips from the International Space Station, the astronauts are seen floating around as if there is no force of gravity holding them to the floor. The truth is that the space station is orbiting Earth at a height of only about 175 kilometers above the surface. While this is plenty to keep the space station above the drag of the air molecules in the atmosphere, it also means that the astronauts actually experience about 90% of the gravity experienced on the ground. How do you explain this?

  • Science -

    I explain it with Newton's Law of Gravity, and Newtons second law of motion.

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