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Re: Newton's second law



The entire set of equations used to express
Newton's second law can be expressed in words
as follows:

The net force acting on a system is equal to
the rate at which the momentum of the system
changes, which is equal to the instantaneous
mass of the system times the rate at which
the instantaneous velocity of the system
changes plus the instantaneous velocity of
the system times the rate at which the
instantaneous mass of the system changes.

The net force and momentum are also
instantaneous, as opposed to average, values.

Daniel Crowe
Oklahoma School of Science and Mathematics
Ardmore Regional Center
dcrowe@sotc.org


-----Original Message-----
From: Justin Parke [mailto:FIZIX29@AOL.COM]
Sent: Thursday, November 06, 2003 12:42 PM
To: PHYS-L@lists.nau.edu
Subject: Newton's second law


Newton' second law:

F = dp/dt= mdv/dt + vdm/dt

In the third term, what is v?


Justin Parke
Oakland Mills High School
Columbia, MD