A spacecraft travels from the Earth to the Moon.
At a certain point in the journey, it has zero weight.
Why is the weight zero at this point?
А
The gravitational fields of the Earth and the Moon cancel each other.
B The spacecraft leaves the Earth's gravitational field.
C The spacecraft stops moving.
D There is no air resistance on the spacecraft.
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Answer:
spacecraft is weightless because there is no external contact force pushing or pulling upon their body. In each case, gravity is the only force acting upon their body. Being an action-at-a-distance force, it cannot be felt and therefore would not provide any sensation of their weight.
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