1. The problem statement, all variables and given/known data A rocket is launched vertically up with no initial velocity. Propulsion is provided by the ejection of mass with constant velocity of ejection u = 66.0 m/s relative to the rocket and at a constant rate so determined that the initial acceleration is zero. The mass of fuel that can be ejected is 94.0% of the total mass at launch. Assuming constant gravitational acceleration, how long does it take the rocket to achieve maximum upward acceleration? u=66.0 m/s Mass of fuel that can be ejected=94.0% of total mass at launch g=9.81 2. Relevant equations (1) ΔP=FgΔt (2) Vf-Vi=uln(Mi/Mf and maybe... (3) Ru=Ma 3. The attempt at a solution Alright, so first I found the delta t by plugging in the numbers given into (1). Then I solved for the final velocity using (2). Now I have no idea where to go and how to find the maximum acceleration and what time that happens at...just a point in the right direction would be nice!!!