Directions
Read the following questions. Choose the right answer.
There is only ONE correct answer to each question.
According to relativistic mechanics, the largest volume of a moving body observed by an observer is measured when the body is:
- moving horizontally
- moving vertically
- decelerating
- at rest
Show answer
Correct answer: D. at rest
Why
Length contraction means a moving object's measured length (and hence volume) along the direction of motion is smaller than its rest-frame value — the largest volume is measured when the body is at rest relative to the observer.