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Q. |
Why is weightlessness experienced while orbiting the earth in space ships? |
A. | Inertia |
B. | Acceleration |
C. | Zero gravity |
D. | None of these |
Answer» D. None of these | |
Explanation: The reason astronauts experience weightlessness which orbiting the earth in spaceships is that they are in free fall. A spacecraft in orbit is falling towards the Earth, because of gravity, but it is moving forward in its orbit fast enough that the path it follows is a curve that is a closed ellipse. |
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