Quote:
Originally Posted by Nereid
My take on Ken G's post (well, one take; there are a few): you could count the exact number of electrons, protons, and neutrons in each (assume each weighs exactly 10 kg). You could consult a table giving the rest mass of each particle, to 6 or even 10 significant digits. With some multiplication and addition, you would get three numbers, one each for the brick, bucket of water, and iron bar. The numbers will not be the same, even though they weigh the same - do you know why?
Yet - and this is truly marvellous - all three 'fall the same'!
|
No. If you have 3 objects massing 10kg, all weight 98N at the surface of the Earth. (If you want it 10.00000000 kg weighs 98.something to 8 digits, I'm not going to look it up)
The thing Fazor seems to be looking at is more:
(impact is energy from 1 m fall)
mass weight acceleration impact
1kg 9.8N 9.8m/s^2 9.8 J
10kg 98N 9.8m/s^2 98J
100kg 980N 9.8m/s^2 980J
So yes, a heavier object will hit harder, even tho it has the same acceleration and same speed if the start conditions are the same.
This is actually where the ATMer really fail. Generally they dont know the math well enough to know what it is actually saying.