Jumping perpendicular out of a fast spaceship will retain your speed right?

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lamp23
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If u stand on top of a spaceship, u will not be thrust backward?
U only do on top of an airplane because of air resistance?
So if u jump up out of a horizontally moving spaceship, after you jump out you are moving with the same horizontal speed as you were inside the spaceship? U just have to thrust downwards to get back?
 
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lamp23 said:
So if u jump up out of a horizontally moving spaceship, after you jump out you are moving with the same horizontal speed as you were inside the spaceship? U just have to thrust downwards to get back?
Or use a tethered line to get back. There were four untethered space shuttle space walks where a thruster pack was used to allow the astronaut to move around.

http://en.wikipedia.org/wiki/Extra-vehicular_activity
 
lamp23 said:
If u stand on top of a spaceship, u will not be thrust backward?
U only do on top of an airplane because of air resistance?
So if u jump up out of a horizontally moving spaceship, after you jump out you are moving with the same horizontal speed as you were inside the spaceship? U just have to thrust downwards to get back?

Yes, that is exactly correct. Thinking about space dynamics is the best way to understand F=ma. You will continue to have the same velocity until acted on by some outside force (jetpack, tethered line). Its a bit hard to fully grasp here on earth, because we are constantly acted upon by various forces. (Gravity, pressure, wind resistance, etc.)
 
lamp23 said:
1) If u stand on top of a spaceship, u will not be thrust backward?

2) U only do on top of an airplane because of air resistance?

3) So if u jump up out of a horizontally moving spaceship, after you jump out you are moving with the same horizontal speed as you were inside the spaceship?

4) U just have to thrust downwards to get back?

1 - Top?

2 - Air resistance [STRIKE]and gravity[/STRIKE]

3 - Yes

4 - Down?
 
Mother nature did not endow ur spaceship witth the gift of absolute rest, so yes, relative to the ships frame you will go 0 mph after jumping out of it.