Re: QUESTION ON LAWS OF MOTION AND NEWTON LAW

From: mchristo@xxxxxxxxxxx
Date: Fri, 1 Feb 2008 08:28:34 -0800 (PST)

On 30 Ιαν, 02:45, Sam Wormley <sworml...@xxxxxxxxx> wrote:

mchri...@xxxxxxxxxxx wrote:

suppose we have a planet and that a body is on height H above the
planet. The atmosphere of the planet ends H/2 above its surface. if
the body begins to fall, describe its motion, until it falls on the
surface of the planet.
What I thought in the first place was:

when the body is in vacuum, then the planet exerts a force on it, so
it moves with a constant acceleration, according to Newton's second law.
But Im not sure about that...Can anyone help me organise my thoughts a
little?

Thank you.

Research "terminal velocity".

Thank you all for your help :))
.

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