Re: Kinematics

[Bernard Cleyet <anngeorg@PACBELL.NET>]

Ludwik doesn't have a Behr free fall apparatus?

As a freshman, I remember even finding the "average error" from
deviations from a straight line by eye.  A few years later we learn
users of Chi by eye deserve what they get.

bc  who's old fashioned, thinking a sparked tape, meter stick, pencil
and graph paper is superior to computer acquisition for the FIRST lab.
Convincing the students the av = midpoint, etc. is very important.


Tom Ford wrote:

> Just a terminal clarification. Dan had a handle on the calculation scheme,
> if you follow the detail of what he's done. Ludwick stated that he had made
> up the sample data. I prefer using "uncertainties" from day-one and the
> term "errors" when the students are seasoned enough to be able to recognize
> and account for them. Students come in already branded by "mathematics" and
> will eventually notice that we are sometimes divided by our common language.
>
> Tom Ford
>
> At 02:42 PM 9/15/03 -0400, Ludwik wrote:
>
>
> > I agree with what Tom wrote but in asking the question
> > (see below) I was not addressing the effects of errors.
> > The questions I asked are valid even when errors are
> > negligible.
> >
> > Unlike Dan, who imposed an assumption of a constant
> > acceleration before plotting the data I wanted to plot the
> > Vav and ACav versus time first and then decide if the
cut