Final answer:
Yes, the momentum of a rocket (not including the exhaust products) is conserved while in space as the rocket fuel system is close, hence, no external force acts upon it, Hence, the correct answer is option (A).
Step-by-step explanation:
Yes, the momentum of a rocket (not including the exhaust products) is conserved while in space. This is because the rocket + fuel system is a closed system in deep space, meaning no external forces are acting on it. According to the principle of conservation of momentum, the total momentum of the system remains constant.
When a rocket is propelled in space, and no external forces are acting on the system (excluding the exhaust products), the momentum of the rocket (considering both the rocket and its exhaust) is conserved. The rocket gains momentum in one direction, and the expelled exhaust gains momentum in the opposite direction, resulting in a conserved total momentum for the system.