1. The problem statement, all variables and given/known data In a hypothetical situation, a rocket has a mass of 100kg, with an engine that emits 21467N. The rocket will fly up from the height of 0m, to the height of 150m. Calculate the time (seconds) it will take for the rocket to reach the height of 150m, with the given data. Air resistance is negligible for this problem. 2. Relevant equations How long in seconds, will it take the rocket to go from 0m to 150m? 3. The attempt at a solution I started by calculating the acceleration of the problem. Force of gravity on the rocket = -9.8 * 100kg = -980N Force of the engine = 21467N Sum of all forces = 21467N - 980N = 20487N Using the Newton's 2nd Law: Sum of all forces = mass * acceleration 20487N = 100kg * acceleration Acceleration = 204.87 m/s^2 At this point, I have no leads on how to derive time, and would appreciate some help, thanks!