Question #26c7f

This part of Physics deals with movement at very high speed, i.e., near or comparable to the speed of light (indicated by $c$).
In Relativity it is considered the fact that the speed of light cannot be exceeded; even if the source of light is moving with a certain speed, light itself, will always move at $c = 3 \cdot {10}^{8} \frac{m}{s}$. This fact introduces the need to consider TIME as relative. Basically, time can change according to the reference frame in which is measured.