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General Category => Off the Record => Topic started by: Jaron on July 22, 2012, 07:39:12 PM

Title: Question about flight, motion and physics
Post by: Jaron on July 22, 2012, 07:39:12 PM
Hi all,

I have a question for you guys..I'm no physics guy by any means so hopefully someone here can answer these questions:

1) When someone or something is ejected from a moving object, will their velocity at least initially match the object they were ejected from?

example: someone thrown from a car going 65 mph, or a skydiver jumping out of an airplane going 550 mph

2) If two objects are flying parallel to one another by a Z coordinate (aka one right above the other) at the same rate of speed, could a PERSON jump from the upper object to the lower object without the higher object having any kind of lead in distance?

example: Two airplanes  - one flying 30 feet above the other at the same rate of speed - could I jump out of the top airplane and land on top of the bottom airplane or would I begin to lose speed once I jumped out of the plane and completely miss?

Title: Re: Question about flight, motion and physics
Post by: Eddie Teach on July 22, 2012, 07:41:58 PM
All the theories that can be posted on Languish are no substitute for real world experimentation.
Title: Re: Question about flight, motion and physics
Post by: Jaron on July 22, 2012, 07:42:29 PM
Quote from: Peter Wiggin on July 22, 2012, 07:41:58 PM
All the theories that can be posted on Languish are no substitute for real world experimentation.

:P Trust me. This is going to a very good cause.
Title: Re: Question about flight, motion and physics
Post by: Admiral Yi on July 22, 2012, 07:50:16 PM
1) yes

2) the top plane better be ahead of the bottom plane.  Your body has more drag than a plane and no thrust.
Title: Re: Question about flight, motion and physics
Post by: Jaron on July 22, 2012, 07:53:20 PM
Quote from: Admiral Yi on July 22, 2012, 07:50:16 PM
1) yes

2) the top plane better be ahead of the bottom plane.  Your body has more drag than a plane and no thrust.

Depending on the situation and the company, my body has plenty of thrust. :perv:
Title: Re: Question about flight, motion and physics
Post by: Admiral Yi on July 22, 2012, 07:59:54 PM
Quote from: Jaron on July 22, 2012, 07:53:20 PM
Depending on the situation and the company, my body has plenty of thrust. :perv:

And the diet.
Title: Re: Question about flight, motion and physics
Post by: Ideologue on July 23, 2012, 12:02:04 AM
The amount of drag and resuling friction at 550mph would, I expect, be completely unsustainable for a human being outside of an aircraft, yes.  Even skydivers in a straight dive only get up to about 200mph and afaik that's already pretty bad.

I don't know if the exact stunt has ever been performed by wing walkers or other daredevils, but a 65mph transfer from one vehicle to another might be possible.
Title: Re: Question about flight, motion and physics
Post by: The Brain on July 23, 2012, 01:35:36 AM
You never said you dropped your girlfriend from a plane.
Title: Re: Question about flight, motion and physics
Post by: DGuller on July 23, 2012, 01:45:33 AM
In a vacuum, it would be easy to jump from one plane to the other.  Then again, in a vacuum, planes wouldn't be able to fly, nor would you be able to stay alive, for that matter.
Title: Re: Question about flight, motion and physics
Post by: The Brain on July 23, 2012, 01:52:55 AM
Vacuums are typically too small for planes or Jaron.
Title: Re: Question about flight, motion and physics
Post by: Ideologue on July 23, 2012, 01:54:47 AM
Untrue.  You can survive unprotected in a vacuum for a period, if you observe certain requirements (namely exhaling first, so that your lungs aren't fatally damaged from the lack of pressure).
Title: Re: Question about flight, motion and physics
Post by: DGuller on July 23, 2012, 01:55:48 AM
Quote from: The Brain on July 23, 2012, 01:52:55 AM
Vacuums are typically too small for planes or Jaron.
:pinch: