How high will an arrow travel into the air when shot upwards?

Question

Bow stress: 68 J
Arrow: 26 g

(there is no air resistance)

Answer 1

Key is precious so answer John's question (Ronald won't help you). I need answer too :P

Answer 2

someone help him out, we all need a chance

Answer 3

262

Answer 4

E = mgh
Solve for h