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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!uwm.edu!ux1.cso.uiuc.edu!news.cso.uiuc.edu!uxa.cso.uiuc.edu!jbh55289
- From: jbh55289@uxa.cso.uiuc.edu (Josh 'K' Hopkins)
- Subject: Re: Acceleration, cats...
- References: <Bzp503.648.1@cs.cmu.edu>
- Message-ID: <Bzq6u7.6AB@news.cso.uiuc.edu>
- Sender: usenet@news.cso.uiuc.edu (Net Noise owner)
- Organization: University of Illinois at Urbana
- Distribution: sci
- Date: Wed, 23 Dec 1992 18:46:54 GMT
- Lines: 40
-
- pgf@srl03.cacs.usl.edu ("Phil G. Fraering") writes:
-
- >Anyone here seen that special they did on TV a while back, about
- >how some cats have fallen from ten or twenty stories and sometimes
- >survived (don't try this at home! don't try it with a cat! and especially,
- >it doesn't work well with humans!)?
-
- >What I want to know is, how the ability to fall from 100-150 feet
- >up was _selected for_ by evolution. It implies that they went through
- >a period of development where cats that could do that were outcompeting
- >cats that weren't, to the extent that a large number of cats today can
- >do it.
-
- >Especially since this isn't something that can be done gradually:
- >the adaptations don't help in falls of 30-60 feet, or much higher than
- >somewhere around 100 feet (I think)...
-
- I'm not a biologist or even a cat owner but what the hell. This is better than
- the Terminal Velocity thread.
-
- Two things come to mind. First, you can't blame everything on evolution. The
- apendix comes to mind. Some things are around simply because they weren't
- selected against.
-
- Second, cats being hunters and able to climb trees, they must have had some
- way of getting down before they invented firemen. Jumping sounds like a
- possibility. I believe that the constraint on hights is not so much a question
- of shock absorbing ability but one of coordination. The test I believe you are
- refering to was studying just why it is that "cats always land on their feet."
- If you toss one of the second story window they don't have time to twist into
- the right position. A higher fall may sound more dangerous but it gives the
- cat time to get into landing position. Thus it's actually safer.
-
- One of these days, cats will have to adapt to space so maybe there is some
- value to this post. Probably not.
-
-
- --
- Josh Hopkins jbh55289@uxa.cso.uiuc.edu
- Ho^3 !=L
-