Special relativity (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is an inertial frame of reference?
What is an inertial frame of reference?
A frame moving at constant velocity
Why cannot an accelerating frame be classified as inertial?
Why cannot an accelerating frame be classified as inertial?
It experiences changes in velocity
What type of frames is special relativity restricted to?
What type of frames is special relativity restricted to?
Inertial frames only
What does the first postulate state about light's speed?
What does the first postulate state about light's speed?
It is invariant for all observers
What is the speed of light in a vacuum?
What is the speed of light in a vacuum?
m/s
What does the second postulate state?
What does the second postulate state?
Laws of physics same in all inertial frames
What is time dilation?
What is time dilation?
Time moves slower for moving observer
What happens to objects moving at high speeds?
What happens to objects moving at high speeds?
They appear contracted in motion direction
What happens to an object's mass as it approaches light speed?
What happens to an object's mass as it approaches light speed?
Mass effectively increases
Two astronauts in spaceships at different speeds observe a light beam. What do they measure?
Two astronauts in spaceships at different speeds observe a light beam. What do they measure?
Both measure m/s