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Re: Name that force



A good name for this force is "Deceleration force"

Herb gottlieb from New York City
(Where such forces that cause negative changes in speed)


On Tue, 28 Oct 2003 09:10:43 -0800 Ludwik Kowalski
<kowalskil@MAIL.MONTCLAIR.EDU> writes:
In a conceptual question Hewitt asked what
happens to the speed of an open freight car
(increases, decreases or remains the same)
when it rolls friction-free along a horizontal
track while a pouring rain falls vertically.

The expected answer is: "speed decreases
as water accumulates in the car because the
momentum must be conserved." What is a
good name for a force responsible for the
change in speed?
Ludwik Kowalski




Herb Gottlieb from New York City
A nice friendly place to live and visit