meteor energy

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From: Bill Taylor (bt4_1284@yahoo.com)
Date: Mon Dec 02 2002 - 07:24:15 PST 

Message-ID: <20021202152415.67551.qmail@web40402.mail.yahoo.com>
Date: Mon, 2 Dec 2002 07:24:15 -0800 (PST)
From: Bill Taylor <bt4_1284@yahoo.com>
Subject: meteor energy

In the current issue of Mercury, the magazine for Astro Society of the
Pacific, there is a good article on near-Earth asteriods and the
possibility of them hitting Earth.

On p. 26 there is a graph that shows that the energy of an asteriod impact
is proportional to the SQUARE of its mass. Why the square? I would have
thought that the energy would be proportional to the mass, and to the
square of the velocity.

Thanks,

Bill Taylor

=====
Bill Taylor
San Francisco
415 661 9667

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