1. The problem statement, all variables and given/known data A 20000kg rocket has a rocket motor that generates 3E5 N of thrust. PartA: What is the rocket's initial upward acceleration? Express your answer using two significant figures. Part B: At an altitude of 5km the rocket's acceleration has increased to 6m/s^2. What mass of fuel has it burned? Use wo significant figures in your answer. 2. Relevant equations Part A: I used the equation F_thrust_=ma-mg_earth_ Part B: I dont' know the equation. 3. The attempt at a solution PartA: I got the right answer 5.2 m/s^2 Part B: I got it wrong i tried using the same equation as part A but didn't work.