when a rocket ship is blasting off,What does it mean when they say T minus 45 seconds?

1 ⤊

What Does the T mean

2007-10-18 10:49:50 · 2 answers · asked by jphoenix91 2 in Science & Mathematics ➔ Physics

T stands for time, as in "launch time." T-45 seconds is 45 seconds prior to launch.

2007-10-18 11:20:06 · answer #1 · answered by ZikZak 6 · 0⤊ 0⤋

It's how much time the rocket has been off the ground. Before launch the say "minus" and after launch it's "plus"

2007-10-18 18:11:41 · answer #2 · answered by Nomadd 7 · 1⤊ 0⤋