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help with air friction?




I received this question below. Any who want to reply, please reply to
Tom Frederick (he's not on phys-L)

......................uuuu / oo \ uuuu........,.............................
William Beaty voice:206-781-3320 bbs:206-789-0775 cserv:71241,3623
EE/Programmer/Science exhibit designer http://www.eskimo.com/~billb/
Seattle, WA 98117 billb@eskimo.com SCIENCE HOBBYIST web page


---------- Forwarded message ----------
Date: Wed, 19 Nov 1997 15:33:53 -0800
From: Tom Frederick <frederit@saline.k12.mi.us>
To: billb@eskimo.com
Subject: Comments from Amateur Science

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http://

--- comments ---
Dear Bill,

I am a physics teacher carrying out a "projectile launch lab" with very
consistent and accurate equipment from PASCO My students and I wanted to
determine the effects of air resistance. When I looked into this I got
very nebulous results. Some texts said the formula is -kav^2, some said
-kAv, some said that it is an empirical measurement... Is there an easy
wat to determine the effects of air resistance on a metal sphere in 2D w/o
just measuring and working backwards? I know that the component of
velocity are always changing during the flight so anything will be at best
an approximation but I would appreciate if you point me in the right
direction...

Thanks,

Tom Frederick
Physics Instructor
Saline High School
Saline, MI