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To clarify what delazeur meant:

g already means "9.8 m/s²"

Thus, normal gravity is 1g and free fall is 0g. 9.8g would mean 9.8 times the gravity at Earth surface, that is "96 m/s²". You would feel almost ten times as heavy. For reference:

Jupiter "surface" gravity is 25.9 m/s²

Sun "surface" gravity is 274 m/s²

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Assuming force being applied along the axis of the spine, and that it continues, you would experience tunnel vision, lightheadedness, loss of consciousness, and eventual death. People can't really handle more than 5g on that axis without a special g suit.

Lesson: Don't try to take it standing up.

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