Final answer:
When a jet fighter fires a rocket eastward with a force of 1.0 x 10^5 N, it experiences an equal and opposite force to the west, affecting its motion in accordance with Newton's third law of motion.
Step-by-step explanation:
When a jet fighter fires a rocket with a force of 1.0 x 10^5 N to the east, according to Newton's third law of motion, the rocket will exert an equal and opposite reaction force on the jet fighter. This reaction force is an example of Newton's third law, which states that for every action, there's an equal and opposite reaction.
Therefore, the jet fighter will experience a force of 1.0 x 10^5 N to the west. This reaction can affect the motion of the jet fighter, depending on various factors including the mass of the fighter and any other forces acting upon it, such as air resistance, gravity, and engine thrust. The fighter's response to this force will involve acceleration as described by Newton's second law of motion, which states that Force equals mass times acceleration (F = ma). The actual resulting acceleration of the jet fighter would depend on its mass and the net force acting on it once other forces are taken into account.