[latex]T=mc^2-m_0c^2\ T=frac{m_0c^2}{sqrt{1-V^2/c^2}}-m_0c^2\ T=left(frac{1}{sqrt{1-V^2/c^2}}-1 ight)m_0c^2=(gamma-1)m_0c^2[/latex] jeżeli V<