NASA launches a rocket at $t = 0$ seconds. Its height, in meters above sea-level, as a function of time is given by $h(t) = -4.9t^2 + 103 t + 283$.

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.