As a promotion for the Houston Astros downtown ballpark, a competition is held to see who can throw a baseball the highest from the front row of the upper deck seats, 83ft above field level. The winner throws the ball with an intitial vertical velocity of 92ft/sec and it lands on the infield grass. 
A) Find the maximum height of the baseball
B) How much time is the ball in the air?
C) Determine its vertical velocity when it hits the ground?