WAEC Physics 2024 Objective — Question 10
Question 10 of 50 from the West African Examinations Council (WAEC) Physics 2024 Objective paper, with the correct answer and a full explanation.
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10. The law of conservation of momentum is stated for closed and isolated systems. What are the two conditions for a system to be closed and isolated? A.
- A. No external force acts on the system and there is no change in mass of the system.Correct
- B. No external force acts on the system and there is a gain in mass.
- C. No external force acts on the system and there is a loss in mass.
- D. An external force acts on the system and there is no change in mass.
Explanation
There should be no external force acting on the system and the mass should be constant.
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