One prediction of Einstein's special theory of relativity is that objects traveling close to the speed of light
A) get lighter.
B) get more massive.
C) get longer.
D) disappear.

Question

Quizplus · Accepted Answer

According to Einstein's special theory of relativity, as an object's speed approaches the speed of light, its mass appears to increase from the perspective of a stationary observer. This is due to the relativistic mass increase effect, which is a consequence of the theory's equations.

One Prediction of Einstein's Special Theory of Relativity Is That