Final answer:
As an object approaches the speed of light according to Einstein's theory of relativity, its mass increases indefinitely.
Explanation:
In special relativity, as an object approaches the speed of light, its mass increases. This phenomenon is governed by Einstein's famous equation E = mc2.
As the object's speed gets closer to the speed of light, its mass becomes infinite. This poses a theoretical limit on how fast an object with mass can travel.
This concept is a fundamental aspect of Einstein's theory of relativity and has been experimentally verified.
Learn more about Einstein's theory of relativity here:
https://brainly.com/question/22816553
