What does a frame of reference provide for describing events?
A coordinate system and a clock for describing their positions and times.
AQA A-level Physics (7408) · 3.12.3.2
Revise AQA A-level Physics (7408) specification point 3.12.3.2, Einstein’s theory of special relativity (A-level only), with free active-recall flashcards. Flip through the set or review every question and answer below.
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What does a frame of reference provide for describing events?
A coordinate system and a clock for describing their positions and times.
How does a free object behave in an inertial frame?
With no resultant force, it remains at rest or moves at constant velocity.
Is a frame inertial if it moves at constant velocity or accelerates relative to an inertial frame?
What is the principle of relativity?
The laws of physics have the same form in every inertial frame of reference.
What does the second postulate of special relativity say about the speed of light in free space?
It is in every inertial frame, regardless of the motion of the source or observer.