A projectile is fired straight up with a velocity of 368 ft/s. Its altitude (height), h, after t seconds is given by h(t) = - 161-+ 368t a. What is the maximum height of the projectile? b. When does the projectile hit the ground? a. The maximum height of the projectile is (Simplify your answer Type an integer or a decimal.) b. The projectile hit the ground after (Simplify your answer. Type an integer or a decimal.)