Question

Question #8212b

Answer 1

No. On the contrary it appears heavy.

Explanation:

It is a case of quantum mechanics.

Whenever speed of an object is comparable to the speed of light the laws of classical mechanics are no longer valid with rest mass `m_@`in the equations.
For such cases the

`E_(t otal)=gamma. m_@ c^2`
where Lorentz factor `gamma-=1/sqrt(1 - v^2/c^2)`

Lorentz factor `gamma=1` only for small values of velocity when `v^2/c^2` in the denominator is small and can be ignored.

Observe what happens to the value of Lorentz factor when `v=c`. It is a singularity.