A 90g arrow is shot straight up into the air with a spped of 23 m/s. It reaches a maximum height of 25.9898m. Find the initial kinetic energy. the acceleration of gravity is 9.8 m/s2. Answer in units of J. Find the potential energy at its highest position. Answer in units of J.

Answer 1

Use the formulas for kinetic energy:
(1/2) M V^2, and
potential energy:
(M g H)
They should give you the same answer, except for possible differences in rounding.