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# Re: asymmetry measure

Science Fair:

Alissa Schunter The Effects Of Gravity And Air Resistance On The
Trajectory Of A Bullet Junior Mathematics & Computer Sciences Boltz
Junior High School

I'll continue searching 'till someone else comes up w/ the equations --
I'm certain it's easy de nuovo. Just add a -coefficient(v^2) in the
direction of motion to the parametric equations.

In searching I found the claim that grosse Bertha was inaccurate until
the trajectory was assumed an ellipse instead of a parabola.

bc

Ludwik Kowalski wrote:

The Interactive Physics, as I recall, gives one a
crude way of controlling air resistance. Thus one
can collect data by simulating experiments. Then
one can try to describe the data with a formula,
or test a preexisting formula. For real data one
should consult artillery manuals, I suppose.
Ludwik Kowalski

On Thursday, February 5, 2004, at 09:10 AM, Ludwik Kowalski wrote:

What Alex wants, probably, is a formula which
gives the value of the air resistance coefficient
as a function of an asymmetry parameter, such
"the optimal launch angle," or "the difference
between the ideal and real ranges." I have
not seen such formulas.
Ludwik Kowalski

On Thursday, February 5, 2004, at 08:12 AM, Brian Whatcott wrote:

As a straw man, I will offer as a measure, the optimal launch angle
for maximum range.

Brian W

At 05:03 PM 2/4/2004, you wrote:

In projectile motion without resistance the path is a parabola.
With resisatance, the path is asymetric. Is there a standard way to
measure that asymetry? Can that measure be analytically related to
the
the resistance?
ce

Brian Whatcott Altus OK Eureka!