A toy rocket is shot vertically into the air from a launching pad 8 feet above the ground with an initial velocity of 72 feet per second. The height hin feet, of the rocket above the ground at seconds after launch is given by the function h(t) = - 16t ^ 2 + 72t + 8 8. How long will it take the rocket to reach its maximum height ? What is the maximum height? Second( s) after launch. The rocket reaches its maximum height at (Simplify your answer.)