Answer:
it increases-
Explanation:
When the mass of a rocket decreases as it burns through its fuel and the force ( thrust) is constant then by newtons second law of motion
F= ma  here F is constant this means that  ma= constant
⇒ m= F /a   this implies that mass is inversely proportional to  acceleration.
its means when the mass decreases the acceleration must increase. hence the acceleration increases
