Question

When an object with a rest mass of 2.0 kg approaches the speed of light, its massapproachesO a. 0O b. 0.5O c. 4O d. c²O e. infinity

Answer 1

The equivalence between mass and energy is established by the expression of the theory of relativity:

$\begin{gathered} E=mc^2 \\ where: \\ c=3\times10^8m/s \\ \end{gathered}$

Therefore:

$\begin{gathered} m=\frac{m_0}{\sqrt{1-\frac{v^2}{c^2}}} \\ m\rightarrow\infty \end{gathered}$

Answer:

e. infinity