>>25
In case you hadn't noticed, you've repeated what
>>15 said. Here, let me put your post and
>>15 side-by-side:
Pounds are analagous to newtons. What they should be using are slugs, which are units of mass like kilograms.
Pounds are _correct_ when you're talking about weight. They're incorrect when you're talking about MASS
Now, let's get on with the real issue: colloquial use of the word "weight" is
wrong. Think carefully why people weight stuff at the market and you'll soon understand why. What they're really interested in is the mass: the amount of stuff they're buying. If they bought the same shit on the moon, they're still buy the same mass, even though the weight is completely different.
Also,
>>27 is wrong, if they'd care to google it (first hit!):
http://www.physics.ucla.edu/k-6connection/Mass,w,d.htm