NASA/NOAA | GOES-O Launch in HD

The video transcript details the launch sequence of the D4 rocket carrying the Gozo weather satellite. It covers the pre-launch preparations, countdown, liftoff, and initial ascent. The transcript also describes the rocket's mid-flight dynamics, including passing Mach one and reaching maximum dynamic pressure. Finally, it discusses the separation of solid motors and the burnout phase, highlighting key moments in the rocket's journey.

What information is conveyed by the statement 'Altitude now three nautical miles velocity 19145 miles per second'?

Explain the importance of the separation of solid motors during the flight.