Understanding Special Relativity

What does Einstein's Special Relativity suggest about time across the universe?

• Time is constant and unchanging.

• Time is an illusion.

• Time varies for different observers.

• Time is the same for all observers.

According to the first postulate of Special Relativity, how do the laws of physics behave?

• They change based on the observer's speed.

• They are the same in all frames of reference.

• They only apply to stationary observers.

• They vary with the observer's direction.

In the train example, how does the speed of a thrown football appear to an observer on the platform?

• 100 km/h

• 20 km/h

• 130 km/h

• 120 km/h

What is the second postulate of Special Relativity regarding the speed of light?

• It is constant for all observers.

• It slows down for stationary observers.

• It is faster for moving observers.

• It varies with the observer's speed.

Why do events appear to happen at different times for observers in relative motion?

• Due to differences in gravitational fields.

• Because time is an absolute concept.

• Because of the constant speed of light.

• Due to optical illusions.

What does a light clock demonstrate about time in motion?

• Time speeds up in motion.

• Time remains unchanged.

• Time slows down in motion.

• Time becomes unpredictable.

At what speed does time dilation become significantly noticeable?

• At 10% of the speed of light.

• Near the speed of light.

• At everyday speeds.

• At 70% of the speed of light.

What did the Hafele-Keating experiment demonstrate?

• Time is constant for all observers.

• Time speeds up for stationary clocks.

• Time slows down for moving clocks.

• Time is unaffected by motion.

How do muons provide evidence for time dilation?

• They remain unchanged in motion.

• They disintegrate slower in motion.

• They disappear instantly in motion.

• They disintegrate faster in motion.

In the thought experiment, how does time differ for a traveler near the speed of light compared to someone on Earth?

• Time passes faster for the traveler.

• Time passes slower for the traveler.

• Time is unpredictable for both.

• Time is the same for both.