Date: Sat, 2 Nov 2002 15:41:20 -0600

Author: Cynthia Coutre

Subject: VB serve, spike speeds

Post:

Cliff,

Not sure about the speed ranges. I have a game Monday. I'll try to remember
to bring my digital video cam to take some data! You may be able to get a
good speed estimation for a "jump serve", because this is a specific type of
serve. If you just say speed of a "serve" or a "spike", this is too general
because there are so many different types of each which have different
trajectories (straight to lobbing), spin or no spin, etc. Impulse given by
the player matters, also.

Cynthia

>===== Original Message From "Cliff Bettis" =====
>Thanks Cynthia,
>
>By the way, the altitude didn't seem to bother the Husker VB team:they won
>in straight sets.
>
>Do you happen to know how fast a volley ball goes when spiked or jump
>served?
>
>Cliff
>
>----- Original Message -----
>From: "Cynthia Coutre"
>To:
>Sent: Wednesday, October 30, 2002 4:02 PM
>Subject: RE: Newton's Law of Gravity Confirmed by Volleyball team's trip to
>Boulder?
>
>
>> I've been playing VB for about 15 years. The serve -can- have a top spin,
>but
>> it's just like a baseball pitch (slider, fast ball, etc)... different
>types of
>> serves travel differently. I'd have to think about the rest of what the
>> article said... ball carrying farther, etc.
>>
>> One of the teams I was on (in the 'burbs of Chicago) had a tournament in
>> Boulder one year. The whole team had little tolerance for the altitude
>> change, so we were all sucking for air after only a small amount of
>activity.
>> This threw our bodies and athletic abilities off so much that I'm not sure
>if
>> we would have even noticed any changes in the ball's behavior.
>>
>> Lots of athletic questions coming up lately... right up my alley! *smiles*
>>
>> Cynthia
>>
>> >===== Original Message From "Rick Tarara" =====
>> >I don't know about volleyball, but I know that golf commentators talk
>about
>> >playing at altitude (7000 ft) having about a 10% effect on distance.
>Again,
>> >obviously a factor of the 'thinner' atmosphere not the miniscule change
>in
>> >the gravitational field.
>> >
>> >Rick
>> >
>> >*********************************************************
>> >Richard W. Tarara
>> >Professor of Physics
>> >Saint Mary's College
>> >Notre Dame, Indiana
>> >rtarara@saintmarys.edu
>> >********************************************************
>> >Free Physics Educational Software (Win & Mac)
>> >www.saintmarys.edu/~rtarara/software.html
>> >NEW: Mac versions of Lab Simulations
>> >********************************************************
>> >----- Original Message -----
>> >From: Cliff Bettis
>> >To: tap-l@listproc.appstate.edu
>> >Sent: Wednesday, October 30, 2002 10:59 AM
>> >Subject: Newton's Law of Gravity Confirmed by Volleyball team's trip to
>> >Boulder?
>> >
>> >
>> >OK,
>> >
>> >Here is what appeared in today's student newspaper in an article about
>the
>> >VB teams road trip to play in Boulder:
>> >
>> >Adding to the different look could be the high altitude of Boulder, where
>> >Cook said the thin atmosphere can play tricks on the trained reflexes of
>his
>> >players.
>> >
>> >"It does affect the ball a lot," Cook said. "The ball carries frther so
>you
>> >have to adjust your serving. Jump serving is also not as effective
>because
>> >the ball doesn't fall as fast."
>> >
>> >
>> >Anybody out there know anything about the intricacies of Volleyball? IS
>the
>> >coach misquoted? Obviously we are not going to presume the trained
>reflexes
>> >of his players are good enough to serve as g-meters. Is there an
>aerodynamic
>> >explanation? Maybe if the ball is served with top spin? Or maybe it just
>> >travels faster enough that it doesn't have as much time to fall? Seems
>like
>> >the ball is served around 50 m/s so that the difference in time wouldn't
>be
>> >very great over the size of a VB court.
>> >
>> >Cliff
>>
>> Cynthia Coutre
>> Lab Manager, Webmaster
>> Dept of Physics and Astronomy
>> Vanderbilt University
>> Box 1807, Station B
>> Nashville, TN 37235
>>
>> Office: 6301E Stevenson Center
>> Phone: (615) 343-7710
>> Fax: (615) 343-7263

Cynthia Coutre
Lab Manager, Webmaster
Dept of Physics and Astronomy
Vanderbilt University
Box 1807, Station B
Nashville, TN 37235

Office: 6301E Stevenson Center
Phone: (615) 343-7710
Fax: (615) 343-7263

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