Bob, are we talking momentum or force here?

kg-m/sec^2 = mass x acceleration ? = force ?

Am I missing something?

Cat

From Wikipedia, " linear momentum, translational momentum, or simply momentum is the product of the mass and velocity of an object. "

^2

Force is "By substituting the definition of

acceleration, the algebraic version of

Newton's second law is derived:

F → = m a → . {\displaystyle {\vec {F}}=m{\vec {a}}.}
Newton never explicitly stated the formula in the reduced form above." Again from Wikipedia.

But here we are discussing Energy, which is Force through a distance, or MV^2. The limit possible is of course when the velocity is the speed of light, or E = MC^2

So no, I was not really discussing force, but rather energy. The velocity is squared to give energy as output. Momentum would be if the velocity were not squared.

Physics is still the same as it was when we were in School, at least for things like this. I have totally ignored relativistic effects naturally. the speeds involved are minor for that.

I used an on-line unit converter to convert from Newton-Meters to Megatons. I haven't checked that, and don't offhand know the conversion numbers. But it's still quite a lot of energy. I haven't fact checked the numbers, just threw it into a spreadsheet then ran the result through the converter to get something to compare to bomb numbers.

Oh, and I also assumed the mass of Didymus reported was correct. I don't know if that also incuded Didymoon, which while much smaller would still make quite an impression.

BTW, Catastrophe, I do continue to enjoy your occasional comments on these forums. It's specifically appropriate on this particular question for your Nominal Nomus. Please continue posting. You are one of the rare few who both enlighten and entertain.