1. The problem statement, all variables and given/known data A model rocket blasts off vertically from rest at time t=0 being pushed by an engine that produces a constant thrust force F up. The engine blasts away for t seconds and then stops. Find the height y and vertical velocity that the rocket has reached by the end of the blast time t. 2. Relevant equations f=ma 3. The attempt at a solution a = F y(t) = .5Ft^2 Is acceleration really the same as the thrust, or is acceleration the thrust - the effect of gravity?