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**[SOLVED] Projectile Motion Question**

**1. Homework Statement**

a swimmer moving at 1.80m/s dives off a pier and hits the water .80 m from the edge of the pier how high is the pier above the water

**2. Homework Equations**

Vx=change X /change Time

change Y = Vyi . change Time +1/2 a . (change time)^2

**3. The Attempt at a Solution**

i found time with the Vx formula to be .44m/s

then i punched it into the change Y formula to get the height of the pier as 0.94 m

im just wondering if i approached it right and by change i mean the displacement triangle i just dont know how to make the symbol sorry

thanks ahead of time