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## Homework Statement

A speedy destroyer’s 5 inch gun fires a projectile at some angle to the horizontal. If the thing travels a distance of 23 500 m in 135 s, what was the projectile’s initial velocity?

## Homework Equations

v=vi+at

v^2=vi^2+2a(s) s=displacement

s=vi*t+.5at^2

## The Attempt at a Solution

Hello, I really don't know where to start, since I don't have an angle. I've made a diagram and split into 3 parts, up, down, and horizontal. How do I progress through this problem!?