The magnitude of the total initial velocity of the rocket is determined as 9.82 m/s.
The magnitude of the total initial velocity of the rocket is calculated as follows;
V = D/T
where;
V = (54)/(5.5)
V = 9.82 m/s
Thus, the magnitude of the total initial velocity of the rocket is determined as 9.82 m/s.
Learn more about velocity here: https://brainly.com/question/4931057
#SPJ2