Q: Given a scientific passage and an answer, generate a question for the given answer.
Passage: Mass can be destroyed to release energy. We do not ordinarily notice the increase or decrease in mass of an object because the change in mass is so small for a large increase in energy. The relativistic work-energy theorem is W net = E E 0 = mc 2 mc 2 = 1mc 2 . Relativistically,. Answer: energy
A:
Mass can be destroyed to release what?