[meteorite-list] Significant digits

[Chris Peterson]

Weight is a force, properly measured in Newtons (or some other unit of 
force). And strictly, your comment should have referred to the 
acceleration of gravity, not the force of gravity. Of course, mass and 
weight are related by Newton's Second Law, F=ma. And it is quite true 
that the acceleration of gravity changes with height, and therefore the 
weight changes as well, since the mass is invariant (except for the 
little detail of ablation...)

Chris

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Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

On 4/9/2013 3:08 PM, Michael Mulgrew wrote:
> Kilograms are a unit of mass, which is regardless of the force of
> gravity.  Although often spoken of as "weight", correctly it should be
> referred to as "mass".
>
> Michael in so. Cal.