The statement that astronauts on the Moon are weightless is true.
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when the rockets stop firing, astronauts begin free fall (weightless).
Because of gravity
Because of free fall, astronauts in orbit appear weightless and float within their spacecraft. This is due to the spacecraft and everything inside it, including the astronauts, all falling towards Earth together at the same rate. The sensation of weightlessness is a result of this continuous state of free fall.
The statement that astronauts on the Moon are weightless is true.
No.
yes there are
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Gravity is a non-contact force that acts between two masses.
when the rockets stop firing, astronauts begin free fall (weightless).
Because of gravity
Free fall
They are in the vacuum of space.
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the absence of the gravitational force or field in space causes the astronauts to become weightless
They do not. Astronauts in space are effectively weightless, so for them, there is no up or down; the idea of "upright" has no meaning.