NASA launches a rocket att t = 0 seconds. Its height, in meters above sea levelas a function of time is given by h(t) = - 4.9t ^ 2 + 46t + 311 Assuming that the rocket will splash down into the ocean, at what time does splashdown occur? The rocket splashes down after seconds. How high above sea level does the rocket get at its peak ? The rocket peaks at meters above sea level