I have never noticed previously that ‘momentum’ is based on the word “moment”.
This must correspond to the idea that ‘momentum’ is a movement in time, only noticeable as a progression over a span of ‘moments’.
The word ‘momentous’ denotes an event so noteworty that the ‘moment’ in which it occurs stands out from all its neighbouring ‘moments’.
But perhaps these uses of the words ‘momentum’ and ‘momentous’ (to indicate movement and noteworthiness respectively) come out of a human language that conceives time as a linear succession of moments.  If this assumption were to be challenged, perhaps ‘momentousness’ could swell, burst its seed-jacket, and sprout into a greater field of time and space.  Perhaps ‘momentum’–like the Little Engine That Could chugging up the mountainside with all the children’s toys–would embrace the flight of  a whole flock of ‘moments’.
Jack said that, although a Graduate Thesis on the use of ‘Momentum’ in the TSK vision would be useful, he wasn’t expecting one. Â Whew! Â Close one.