[Rushtalk] Laughable............

Dennis Putnam dap1 at bellsouth.net
Mon Jul 24 04:42:20 MDT 2017


Yep. Kinematics

v = dx/dt
a = dv/dt

thus Newton's law.

F_net = d(mv)/dt

What you took, John, may have been the equivalent of high school physics
rather than engineering physics.

v = d / t
a = v / t
F_net = m ∙ a

On 7/23/2017 9:38 PM, Stephen Frye wrote:
>
> Hard to imagine.  For intro to physics of motion we needed
> differential calculus, and integral calculus for magnetism and
> electricity.  Then on to differential equations and multi variable. 
> Good for you!
>
>  
>
> I guess, though, that you could do some motion work with just basic trig.
>
>  
>
> *From:*rushtalk-bounces at csdco.com [mailto:rushtalk-bounces at csdco.com]
> *On Behalf Of *John Quayle
> *Sent:* Sunday, July 23, 2017 6:05 PM
> *To:* rushtalk at csdco.com
> *Subject:* Re: [Rushtalk] Laughable............
>
>  
>
>                     */I took physics as an undergrad and never used
> calc......./*
>
>  
>
> On 7/22/2017 11:40 PM, Stephen Frye wrote:
>
>     For Calculus I believe that.  I have found no practical use other
>     than moving through physics.  I am sure it is useful in Chemistry,
>     also.  But when I needed help, it was the physicists who could do it.
>
>      
>
>     *From:*rushtalk-bounces at csdco.com
>     <mailto:rushtalk-bounces at csdco.com>
>     [mailto:rushtalk-bounces at csdco.com] *On Behalf Of *John Quayle
>     *Sent:* Saturday, July 22, 2017 8:32 AM
>     *To:* rushtalk at csdco.com <mailto:rushtalk at csdco.com>
>     *Subject:* Re: [Rushtalk] Laughable............
>
>      
>
>                         */Actually, Stephen, I went to engineers when
>     I worked for GE and had calculus. Not a single one of them could
>     explain it to me. Most didn't even try. The company comptroller
>     said to me, "we don't use that crap anymore for forecasting." /*
>
>      
>
>     On 7/22/2017 8:48 AM, Stephen Frye wrote:
>
>         Interesting, John.  When I mentioned that so many parents
>         couldn’t do simple algebra, your answer was that you checked
>         with your engineers and they said why should they, we have
>         calculators?
>
>          
>
>         Personally, I think that Algebra I, Geometry I, and
>         Trigonometry I or Trig/pre-calc should be mandatory for
>         graduation from high school.  (Personally, I would like to
>         substitute Algebra II in place of Geometry, but that’s just
>         me.)  But in order to be successful in those classes, students
>         need the foundations from Primary and Middle schools.  But
>         none of this is simple.  We don’t want the Federal Government
>         involved, we want it at state level.  The problem with state
>         level is that we quickly reach the point where a high school
>         diploma from one state isn’t comparable to one from another. 
>         I am not sure that is good either.  I particularly like the
>         Abitur path in Western Europe.  But there the students and
>         parents are interested in education.  In the U.S., education
>         is the number one commodity for which people strive to get the
>         least for their money.  Before anything will work, we need to
>         fix that.  And I don’t know how to change attitudes.  Our kids
>         simply don’t give a shit.
>
>          
>
>         *From:*rushtalk-bounces at csdco.com
>         <mailto:rushtalk-bounces at csdco.com>
>         [mailto:rushtalk-bounces at csdco.com] *On Behalf Of *John Quayle
>         *Sent:* Friday, July 21, 2017 10:37 PM
>         *To:* Rushtalk Discussion List <rushtalk at csdco.com>
>         <mailto:rushtalk at csdco.com>
>         *Subject:* [Rushtalk] Laughable............
>
>          
>
>
>           No, Algebra Isn't a 'Civil Rights Issue,' and Kids Aren't
>           That Stupid <http://em.mrc.org/v0850LUb0KYSRinfB00L000>
>
>         <http://em.mrc.org/v0850LUb0KYSRinfB00L000>
>
>         In the latest move to dumb down society to the point where our
>         brains no longer function at all, one community college
>         chancellor is now suggesting high schools and colleges nix
>         algebra classes because they’re too hard.
>
>
>
>
>
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>      
>
>
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