alleryStart learning →What is time dilation?
ATime passing more slowly for a moving observer
BTime passing more quickly for every observer without exception
CA clock physically breaking down at high speed
DTime stopping completely for a stationary observer
Answer & Solution
Correct answer: A. Time passing more slowly for a moving observer
1. Time dilation describes how time passes more slowly for an observer who is moving relative to another observer.
2. It is the moving observer's clock that runs slow as measured by the other, not every observer speeding up.
3. No physical clock damage is involved, and a stationary observer's own time does not stop.
4. So time passing more slowly for a moving observer is correct.
_Source: OpenStax Physics (CC BY 4.0), Ch 10 "Special Relativity", section 10.2 Consequences of Special Relativity_
Keep practising Special Relativity
Browse all Special Relativity questions for Alberta Diploma Exams, or explore more Physics topics.
Related questions
Knock out the false light claimsIn the RHIC collider, gold ions are accelerated to about 99.7 percent of the speed of lighDeuterium has a binding energy of 3.56 x 10^-13 J. Using c = 3.00 x 10^8 m/s, what is its The nucleus of fluorine-18 has a mass defect of 2.44 x 10^-28 kg. Using c = 3.00 x 10^8 m/What is the rest energy, E0, of an object with a mass of 1.00 g? Use c = 3.00 x 10^8 m/s.A rod has a proper length of 100 m. An observer moving relative to the rod at 0.80c measurA spaceship has a proper length of 50 m. As it flies past Earth at 0.95c, what length woulHow has time dilation been experimentally confirmed?