Re: Name that force

[Chuck Britton <britton@NCSSM.EDU>]

The force is the impact of each raindrop that hits the BACK wall of
the car or the FRONT of the FRONT wall of the car.

Relative velocity of the drops is slanted backwards, from the car's
point of view.


OK, ya'll, at 9:24 AM -0800 10/28/03, Ludwik Kowalski wrote:
> On Tuesday, Oct 28, 2003, at 06:11 US/Pacific, sampere wrote:
>
> >  How do wheels roll on a friction free surface?  What force makes them
> >  roll?
> Suppose the car was already rolling (under
> ordinary conditions) and then entered an ideal
> world without friction. The wheels continue to
> turn in contact with a friction-free track.
> Ludwik Kowalski


--
Chuck Britton                                   Education is what is left when
britton@ncssm.edu                       you have forgotten everything
North Carolina School of Science & Math         you learned in school.
(919) 416-2762                                  Albert Einstein,        1936