Mass and energy (AQA A-Level Physics): Flashcards

Mass and energy are interchangeable

$E = mc^2$

$m = \frac{m_0}{\sqrt{1 - \frac{v^2}{c^2}}}$

Rest mass (mass of object when at rest)

Approaches infinity

Would require infinite energy

Over 1/10th of speed of light ($c$)

$E_k = \frac{m_0 c^2}{\sqrt{1 - \frac{v^2}{c^2}}} - m_0 c^2$

$E_0 = m_0 c^2$

Mass increases with speed (supports special relativity)