Spehro Sez: "Acceleration depends on the force and the mass (a = f/m). The
net force is the force from gravity minus the drag from the air. Obviously
at the terminal velocity the acceleration is zero."

A fine point for sure! But acceleration is, as you said = force/mass. Not
sure if you meant to say that air drag has an influence on acceleration from
the force of gravity. I don't think it does. Air drag will effect the
resulting velocity, but acceleration from gravity is a constant.

Bob Swinney


"Spehro Pefhany" wrote in message
...
On Tue, 16 Dec 2003 19:43:23 GMT, the renowned "Bob Swinney"
wrote:

Ted sez: "32 ft/sec^2 "near" Earth's surface in vacuum"

Forget the vacuum, Ted. Acceleration is independent of ambient
conditions.
*Terminal velocity* is related to the medium through which a body
"accelerates". Acceleration varies slightly with altitude (on earth)
with
32 ft sec-sec being the accepted figure for sea level.

Best regards,
Spehro Pefhany
--
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