Let's say I have a pillow whose mass is 2 feet squared. I also have a brick whose mass is 2 feet squared. Do they weigh the same?
Size and mass are not the same. Mass and weight are not the same. Mass is a factor of volume and density of an object. Weight is a factor of mass and gravity.
At least, on Earth, where those measurements were devised.
Mass isn't measured in units of length.
Mine is
Like a gun....9 mm
I do not want to be a smarta** (or i miss sarcasm in your post), but do they really teach physics in US schools that way? I.e that you measure mass/weight with square feet instead of pounds/kilograms? Shouldn't 2 feet squared mean an area size and you actually mean imply that the weight is different between the same size pillow and brick?
No.
How did they determine the mass? He says it like it's some obvious thing "We know the weight because we can calculate it based on the mass" but neither is easier to determine and you'd generally use the same method to determine either one while standing still on planet earth.
Why not? Something that is massive has to do with it's size, amirite?
Nah, dude. Just because you don't know it, doesn't make it stupid.
You just posted something saying that because they know the WEIGHT of each block of granite they know how much the WEIGHT of the pyramid is.
