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ramp. As far as effects of air resistance on balls is concerned, I have
gotten
some very nice data using a motion detector mounted on a tall pole
looking
down towards the floor observing a ball bouncing under it. Even in this
case
one can tell that the acceleration of a low density ball is different
for
upward and downward motion. (I'll add that the absolute best air
resistance
data I've gotten in student projects is by videotaping the ball and
analyzing
the tape frame by frame.)
Steve Luzader
--
Stephen Luzader
Frostburg State University
Frostburg, MD
http://antoine.fsu.umd.edu/phys/luzader