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  • A body weighs 1.5 kg. What is its rest energy in Joules?
Multiple choice

A body weighs 1.5 kg. What is its rest energy in Joules?

  1. 15 X 1016

  2. 20 X 1016

  3. 13.5 X 1016

  4. 20 X 1017

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rest mass energy is E = m0c2 = 1.5 x (3x108)2 = 13.5 x 1016  J. The correct answer is (3) 

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