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**1. Homework Statement**

find max height of a projectile travelling at 40 m/s 60 degrees from the horizontal using conservation of energy

**2. Homework Equations**

KEi + PEi = KEf + PEf???

**3. The Attempt at a Solution**

couldnt attempt. (I know I can't be given the answer, but even just the proper equation would be handy, thanks!)

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