In the 1960’s NASA designed a rocket (the Sea Dragon) to be launched from under water. The rocket was never built, but let’s imagine it was.

At some point as the rocket rises, it hits sea level (elevation: 0 meters). That’s when we start our stopwatch.

Let’s assume that in the first seconds the rocket’s elevation is changing at a rate of 25 m/s. The rate is
because the rocket is