Two 67.0-g arrows are tired in quick succession with an initial speed of 80.0 m/s. The first arrow makes an initial angle of 33.0o with the horizontal, and the second arrow is tired straight upward. Assume an isolated system and choose the reference configuration at the initial position of the arrows.
a. What is the maximum height of each of the arrows?
b. What is the total mechanical energy of the arrow-Earth system for each of the arrows at their maximum height?