I think mass and momentum are appropriate. I use them when talking about this too. Given your username and the topic, I think you'll enjoy this read: https://w

I think mass and momentum are appropriate. I use them when talking about this too. Given your username and the topic, I think you'll enjoy this read: https://www.cs.utexas.edu/~EWD/transcriptions/EWD02xx/EWD288.html https://www.cs.utexas.edu/~EWD/transcriptions/EWD02xx/EWD288...