The energy acquired by a mass of 1g moving with the speed of light is:
Correct answer: B. 9 x 10^13 J
- A. 3 x 10^8 J
- B. 9 x 10^13 J
- C. 3 x 10^13 J
- D. 9 x 10^16 J
Explanation
E = mc2 = 0.001 x (3 x108)2 = 10-3 x 9 x 1016 = 9 x1013 J The mass had to be converted to kg and c represents the speed of light.
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