What do we mean by length contraction in relativity?
A)It is the idea that if you measure the size of an object moving relative to you,you will find that it is shorter in every direction than it would be at rest.That is,length,width,and height are all shorter for an object when it is moving by you.
B)It is the idea that moving objects look smaller than nonmoving objects,but their sizes have not really changed.
C)It is the idea that if you measure the size of an object moving relative to you,you will find that in the direction of motion it is shorter than it would be at rest,while its size in other directions is unchanged.
D)It is the idea that if you travel very fast,you'll notice yourself getting shorter.

Question

Quizplus · Accepted Answer

Length contraction refers to the fact that when an object is moving relative to an observer, its size in the direction of motion appears shorter than it would be if the object were at rest. However, its size in other directions remains unchanged. This idea is a consequence of the theory of relativity, which suggests that measurements of distance, time, and other physical quantities are not absolute but depend on the observer's point of view.

What Do We Mean by Length Contraction in Relativity