How many MPH is an Astronaut moving during EVA
[From: ] [author: ] [Date: 12-10-27] [Hit: ]
500 MPH is the approximate orbital velocity of the ISS and the altitude at which the space shuttles usually operated, where most EVAs took place. But remember, speed is relative. Relative to the craft from which the astronaut left, the astronaut isnt going very fast at all,......
Our experience on the surface of the earth gives us the intuition that "things slow down unless some force maintains their motion." But this intuition is wrong. Newton taught us that in fact things maintain their motion in the absence of any force, and indeed a retarding force must be applied if an object is to slow down.
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17,500 MPH is the approximate orbital velocity of the ISS and the altitude at which the space shuttles usually operated, where most EVAs took place.
But remember, speed is relative. Relative to the craft from which the astronaut left, the astronaut isn't going very fast at all, which is why they stay close together. The astronaut is moving at the same speed as his space craft. Without some other force to act on him/her, and since there is no atmosphere there to give wind resistance, there is no reason they would not stay close together.
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Relative to the Earth, roughly 17,500 mph. Relative to the spacecraft, essentially zero.
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The same speed as the International Space Station. Which on average is around 17,500 miles an hour. To be more precise you can look it up on the web.
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