Exam-style question
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Which of the following masses would have the greatest rest energy?.
- A.0.5 kg
- B.1 kg
- C.2 kg
- D.0.1 kg
Model answer
What a good answer should say
- 2 kg
Explanation
Why this works
Rest energy is directly proportional to mass. The largest mass gives the greatest rest energy.
Answer: 2 kg. Conclusion: 2 kg has the greatest rest energy.
Common mistake
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