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## Homework Statement

The highest barrier that a projectile can clear is 15.0 m, when the projectile is launched at an angle of 13.0° above the horizontal. What is the projectile's launch speed?

## Homework Equations

kinematics equations

## The Attempt at a Solution

delta y=15m v0x= vcos13

ay=-9.8m/s^2 ax=0m/s^2

im not sure how to use the information that i have to solve the problem