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QuestionPhysics

What is the highest number of G-forces ever survived by a human?
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Step 1:
I'll solve this problem by providing a detailed explanation about the highest G-forces survived by a human.

Step 2:
: Understanding G-Forces

One G is equivalent to Earth's gravitational acceleration, approximately $$9.8 \mathrm{m/s}^{2}$$.
G-forces represent the acceleration experienced relative to gravitational acceleration.

Step 3:
: Record Holder

The highest documented G-force survived by a human is $$46 \mathrm{G}$$, experienced by Colonel John Stapp during a rocket sled deceleration test in 1954.

Step 4:
: Context of the Experiment

Stapp was part of the U. S. Air Force's research into human tolerance for extreme acceleration and deceleration. He deliberately subjected himself to extreme G-forces to understand human physiological limits.

Step 5:
: Specific Details of the Test

- Location: Holloman Air Force Base, New Mexico - Date: December 10, 1954 - Duration of extreme G-force: Extremely brief (less than one second) - Purpose: Understanding human survivability in high-speed emergency scenarios

Step 6:
: Physiological Impact

At $$46 \mathrm{G}$$, Stapp experienced:
- Temporary blindness - Severe physical strain - Potential risk of fatal injury - Significant medical research contribution

Final Answer

The highest G-force survived by a human is 46 \mathrm{G}, achieved by Colonel John Stapp in a controlled scientific experiment in 1954.