# Relativistic Mass and Energy

Mass and energy are related quantities that we can respectively convert to the other by using the speed of lightIn physics, mass is considered to be a form of energy because the mass of a particle can be converted into other forms of energy such as thermal energy, kinetic energy, etc. In the same way, kinetic energy or radiant energy can form particles with mass.

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How is mass related to energy?

Mass can be converted into energy and vice versa. The relation between mass and energy based on Einstein’s famous equation is E = mc ^ 2.

Does the law of conservation apply to mass and energy?

Yes, it does. When mass converts into energy or vice versa, the total energy is conserved.

How is mass a form of energy?

The concept that explains mass being a form of energy is rest energy. When an object has the velocity of zero, it has a rest energy that is directly proportional to its mass.

## Test your knowledge with multiple choice flashcards

What is the rest energy of a 2.5-gram mass in Joules?

Which of the following is the reason we don’t notice a change in mass when stored energy increases?

Which of the following explains the relationship between mass and energy?

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