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AP Physics I Special Relativity Review Flashcards | StudBud
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AP Physics I Special Relativity Review
AP Physics I Special Relativity Review
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Review of our final unit - special relativity!
Flashcards
14 cards
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Practice quiz
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Questions
14
Answers
1
What is an inertial reference frame?
a frame that is rotating with a constant rotational speed
a frame of motion that contains a large amount of material
a frame in which Newton’s laws of motion are valid
2
Satellites travel at a very high speed, so we (on Earth) measure satellite clocks to run:
slow
normal... (by now you know it's not this one)
backwards
fast
3
'Relativistic effects' happen when
Particles travel close to the speed of light
Particles get too close to a magnetic field
Particles are stationary
Particles travel in fluids
4
Which of the following is NOT an inertial reference frame?
A student sitting at their desk
A car driving at 100 kph
A child tobogganing down a hill
The earth
5
From the perspective of the aliens, how will they see Tom Brady?
moving in fast motion
as a hero
moving in slow motion
moving at a normal rate
6
The alien ship flies past at 0.5c. From Tom Brady's perspective, the alien ship is:
less width (side to side)
less length (nose to tail)
inferior to him in every way
less width and less height
7
Which of the following would be considered a non-inertial reference frame?
A cat running down the stairs at constant speed
A man standing on a chair
A volleyball that is in freefall toward Earth
An airplane banking, following a curved path
8
Which of the following is FALSE?
In a vacuum, c varies slightly based on light frequency
every inertial reference frame is equally valid
The speed of light is the same for all observers
The laws of physics are the same in all reference frames
9
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
10
The speed of light...
is the same for all observers, regardless of their motion
depends on how fast the observer is moving
is slowest through the vacuum of space
will be slower with respect to fast moving objects
11
Which of the following is true of proper time?
it's measured by an observer moving w/respect to 2 events
it is always larger than dilated time
it's measured by an observer at rest w/respect to 2 events
it is measured for an object at rest
12
How fast must a spaceship travel if it is to become 30% as long as its rest length?
0.91c
0.30c
0.95c
0.84c
13
The alien ship flies horizontally at 0.5c. From Tom Brady's perspective, the aliens onboard...
move in fast motion
have the same time as him
move in slow motion
14
An alien ship flies over a stadium at 0.5c. How long do they measure the 100 yd long field as?
50 yards
115.5 yards
100 yards
86.6 yards
