Re: KE & P

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1 total messages Started by Bill Barowy Fri, 01 Jul 1994 13:16

#1372

Author: Bill Barowy
Date: Fri, 01 Jul 1994 13:16

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 Bob wrote:

 >Does anyone have a way of describing the difference between [conceptual
 explainations of energy and momentum] to students?


This is an excellent question! It sure puzzles me.  When I think about
collisions, lets say between two objects,  then I can think about what it
means for momentum or energy to be conserved.  Momentum (as a vector) takes
into account the directions that objects approach before and leave after
the collision.  Energy, because of the tranformations that can take place
in its form, takes into account inelasticity and internal energy- some
objects crunch or store some of the initial kinetic energy.
Bill Barowy
Educational Technology,
Bolt Beranek and Newman,
150 CambridgePark Drive,  Cambridge MA  02140
(W) 617 - 873 - 2036  (F) 617 - 873 - 2455

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