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Special Relativity Review Flashcards | StudBud
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Special Relativity Review
Special Relativity Review
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Questions
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Answers
1
Which of the following is FALSE?
every inertial reference frame is equally valid
The laws of physics are the same in all reference frames
The speed of light is the same for all observers
In a vacuum, c varies slightly based on light frequency
2
Which of the following is true of proper time?
it's measured by an observer at rest w/respect to 2 events
it's measured by an observer moving w/respect to 2 events
it is always larger than dilated time
it is measured for an object at rest
3
Satellites travel at a very high speed, so we (on Earth) measure satellite clocks to run:
fast
backwards
slow
normal... (by now you know it's not this one)
4
Which of the following would be considered a non-inertial reference frame?
A volleyball that is in freefall toward Earth
A man standing on a chair
An airplane banking, following a curved path
A cat running down the stairs at constant speed
5
The center of the Milky Way is 26,000 light years from Earth. Can a human ever get there?
Even with time dilation, it's not possible within 1 lifetime
No, they'd need to travel at light speed,which is impossible
yes, traveling close to the speed of light it's possible
yes, traveling just slightly faster than the speed of light
6
An alien ship flies over a stadium at 0.5c. How long do they measure the 100 yd long field as?
100 m
50 m
115.5 m
86.6 m
7
The alien ship flies horizontally at 0.5c. From Tom Brady's perspective, the aliens onboard...
move in slow motion
move in fast motion
have the same time as him
don't actually exist
8
From the perspective of the aliens, how will they see Tom Brady?
as an alien
moving in fast motion
moving in slow motion
moving at a normal rate
9
The Michelson-Morley experiment confirmed that:
The speed of light is the same for all observers
The speed of light is constant through the ether
the speed of light is not possible to measure experimentally
The speed of light is ... something
10
The alien ship flies past at 0.5c. From Tom Brady's perspective, the alien ship is:
less length (nose to tail)
less width and less height
inferior to him in every way
less width (side to side)
11
The speed of light...
depends on how fast the observer is moving
is the same for all observers, regardless of their motion
is slowest through the vacuum of space
will be slower with respect to fast moving objects
12
How fast must a spaceship travel if it is to become 30% as long as its rest length?
0.95c
0.30c
0.84c
0.91c
