A rocket rises vertically, from rest, with an acceleration of 3.0 m/s2 until it runs out of fuel at an altitude of 1100 m. After this point, its…

A rocket rises vertically, from rest, with an acceleration of 3.0 m/s2 until it runs out of fuel at an altitude of 1100 m. After this point, its acceleration is that of gravity, downward. (a) What is the velocity of the rocket when it runs out of fuel? (Assume up is positive.)