What's in a trice?

"How long is a trice?"
— How long is a moment?
"So a trice is three moments."
— Or three times once.
"Or one once, and a twice."
— Always remembering that you can't have once more time.
"Hm. And if a push speeds things up, then what?"
— What push?
"Momentum."
— How could that count?
"How couldn't it? It's the force."