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Article: <[email protected]>
From: [email protected](Nancy )
Subject: Re: 12th Planet - any photos ?
Date: 17 Mar 1997 03:12:13 GMT
In article <[email protected]> JNTF writes:
> Newton's law describing uniform motion in a straight line
> applies for the case of no external force applied. Since no
> force is applied, the external torque (the vector product of
> force and distance) is zero and consequently angular
> momentum is zero. Motion subject to external forces, such
> as gravity, must obey energy and momentum conservation
> laws. The curved trajectory of interplanetary spacecraft
> satisfy both.
> "JNTF" <[email protected]>
> S.P. Donnell
> Center For Research Support
> Falcon AFB, CO
(Begin ZetaTalk[TM])
Thank you for confirming that your laws of motion state that an object moves in a straight
line unless an external force is applied. In the case of a what you call a NONE escape
velocity object, such as a long period comet, what is that external force that make the line it
is moving in curve, when way out in space? If you say it is gravity, then apply your laws of
gravity! There is a line between the Sun and this long period comet. It should draw the
comet DIRECTLY BACK to the Sun, not move it sideways across the heavens to re-enter
the Solar System in another place!
(End ZetaTalk[TM])