1. The problem statement, all variables and given/known data A rocket projected vertically upwards shows an observed/measured acceleration of 4m/s^2 in its motion. What is the upwards acceleration of the rocket caused by the fuel? 2. Relevant equations gravity = 10m/s^2 3. The attempt at a solution There is an acceleration of gravity acting on the rocket all the time so for it to show an acceleration of 4m/s^2, the internal engine must be making it to accelerate vertically upwards at 14m/s^2. Am I correct?