A male astronaut 82 kg and a female astronaut 64 kg are floating side by side in space.
i) Determine the acceleration of each Astronaut if the women forces on the man with a force of 16 N (left).
ii) How will your answer change if the man pushes with 16 N (right) on the women instead?
iii) How will your answers change if they both reach out and push on each other's shoulders with the force of 16 N?
Answers
landing. Basically, we understand how astronauts
keep their performance high so they can be explorers, scientists,
and operators.
Astronauts change physically during spaceflight, from their brain,
heart, blood vessels, eyes, and ears and on down to their cells.
Many types of research studies validated these changes and
demonstrated how best to prevent health problems and care for the
astronauts before, during, and after spaceflight.
During a shuttle flight, astronauts experienced a multitude of
gravitational forces. Earth is 1 gravitational force (1g); however,
during launch, the forces varied from 1 to 3g. During a shuttle’s
return to Earth, the forces varied from nearly zero to 1.6g, over
approximately 33 minutes, during the maneuvers to return. In all,
the shuttle provided rather low gravitational forces compared with
other rocket-type launches and landings.
The most pervasive physiological human factor in all spaceflight,
however, is microgravity. An astronaut perceives weightlessness and
floats along with any object, large or small. The microgravity
physiological changes affect the human body, the functions within the
space vehicle, and all the fluids, foods, water, and contaminants.
We learned how to perform well in this environment through the
Space Shuttle Program. This information led to improvements in
astronauts’ health care not only during shuttle flights but also for the
International Space Station (ISS) and future missions beyond
low-Earth orbit. Shuttle research and medical care led directly to
improved countermeasures used by ISS crew members. No shuttle
mission was terminated due to health concerns.
370 Major Scientific Discoveries
Astronaut Health
and Performance
I
Explanation:
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