Conservation of momentum states that in a closed system:

A Momentum always decreases

B Total momentum before = total momentum after (in the absence of external forces)

C Momentum increases

D Only kinetic energy is conserved

✓ Correct Answer: Option B

p = mv. In closed systems with no external net force, Σp_initial = Σp_final. Used in collision and explosion analysis.

💡 Why is B) the correct answer?

The correct answer to the question "Conservation of momentum states that in a closed system:" is Option B: Total momentum before = total momentum after (in the absence of external forces).

The other options — A) Momentum always decreases, C) Momentum increases, D) Only kinetic energy is conserved — are incorrect for this FE Exam Prep question. As explained above: p = mv. In closed systems with no external net force, Σp_initial = Σp_final. Used in collision and explosion analysis.

📚 About This FE Exam Prep Practice Question

This 1-level FE Exam Prep question from the Physical Sciences topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free FE Exam Prep practice test or use flashcards for spaced repetition review.

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Conservation of momentum states that in a closed system:

✓ Correct Answer: Option B

📚 About This FE Exam Prep Practice Question

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