1. The problem statement, all variables and given/known data 1.) A projectile is fired from a submarine traveling horizontally at 20 m/s with respect to the water as shown in the figure below. According to an observer on the submarine, the projectile is fired at 45° with an initial velocity of 60 m/s. After firing the projectile, the submarine continues to travel at 20 m/s. According to an observer watching from a boat that is stationary with respect to the water, what will be the angle θ that the projectile makes with respect to the horizontal when it is launched? 2.)A tugboat captain also sees the submarine fire the projectile, but to him is looks like the projectile is moving straight up (i.e. 90° above the horizontal). What is the velocity of the tugboat relative to the water? 2. Relevant equations V[a][/b]=V[a][/c]+V[c][/b] 3. The attempt at a solution I have no idea how to even start this one. The angle is really throwing me off. Any and all help to understand would be appreciated.