Question

THE FIRST STAGE OF MISSILE OR A ROCKET​

Answer 1

The first stage is ignited at launch and burns through the powered ascent until its propellants are exhausted. The first stage engine is then extinguished, the second stage separates from the first stage, and the second stage engine is ignited. The payload is carried atop the second stage into orbit.

Answer 2

The primary stage of a rocket is the first rocket engine to engage, providing the initial thrust to send the rocket skyward. Usually the first stage is larger than the next stage, or stages, because it must transport not only its own weight, but the weight of the rest of the rocket. This engine will continue to operate until its fuel is exhausted, at which time it separates from the rocket and falls to the ground.