Question

"Mars Orbiter Mission is India's first interplanetary mission to planet Mars with an orbiter craft designed to orbit Mars in an elliptical orbit. The fifth firing of the Orbiter places the spacecraft in a 600 by 215,000-Kilometer orbit around Earth and sets up the proper perigee passage for the final engine burn that puts the vehicle onto its Trans-Martian Trajectory."

Which Newton's law of motion does the Orbiter use or abide by? Explain in detail.

Answer 1

Newton's third law is used here.
Gas exhaust and comes out in backward direction, which provides the acceleration in forward direction i.e. every action is equal to reaction.