1. The problem statement, all variables and given/known data An artillery shell is fired at an angle of 23.9◦ above the horizontal ground with an initial speed of 1530 m/s. The acceleration of gravity is 9.8 m/s2 . Find the total time of flight of the shell, neglecting air resistance. Answer in units of min. 2. Relevant equations Vf^2=Vi^2+2ad d=Vit+1/2at^2 3. The attempt at a solution I tried using the first equation above with the givens to find distance, however, I don't know final velocity. Once finding the distance I would have plugged it into the second equation above to find the time. I would have then converted the time in seconds to find the time in minutes. However, none of this was possible because I didn't know the final velocity.