Frames of Reference and Motion
The type of reference frame where objects move at constant velocity and Newton’s laws hold true.
A. Rotating frame
B. Inertial frame
C. Accelerated frame
D. Quantum frame
B: Inertial frame
Light in a vacuum always travels at this constant speed:
A. 3 × 10⁸ m/s
B. 3 × 10⁶ m/s
C. 300 m/s
D. Infinite speed
A. 3 × 10⁸ m/s
This theory states that the laws of physics are the same in all inertial frames and that the speed of light is constant.
A. Schrodinger's Cat Theory
B. Newton’s First Law
C. Special Relativity
D. Quantum Mechanics
C. Special Relativity
This equation shows the relationship between mass and energy:
A. F = ma
B. E = mc²
C. p = mv
D. V = IR
B. E = mc²
What is rest mass:
a. Mass that got tired
b. A large number of sleeping people
c. The mass of a body that is not moving
d. Some sort of hotel
c. The mass of a body that is not moving
If you are in a smoothly moving train and toss a ball straight up, it lands back in your hand because of:
A. Magnetism
B. Gravity shift
C. Shared horizontal motion
D. Air resistance
C. Shared horizontal motion
A moving clock compared to a stationary observer will appear to:
A. Stop
B. Speed up
C. Run slower
D. Disappear
C. Run slower
According to relativity, no object with mass can reach or exceed:
A. The speed of sound
B. The speed of gravity
C. The speed of light
D. Infinite velocity
C. The speed of light
As an object’s speed increases, this increases as well, making it harder to accelerate:
A. Temperature
B. Volume
C. Relativistic mass
D. Gravity
C. Relativistic mass
What are muons:
a. Particles that can’t show time dilation
b. Particles that help show time dilation
c. Particles in a thought experiment
d. Particles of energy
b. Particles that help show time dilation
According to relativity, there is no preferred or absolute:
A. Direction
B. Frame of reference
C. Planet
D. Force
B. Frame of reference
If two observers disagree about the timing of events, it shows that time is:
A. Absolute
B. Universal
C. Relative
D. Imaginary
C. Relative
When a clock moves very fast compared to an observer, it appears to run slower. This effect is called:
A. Length contraction
B. Time dilation
C. Mass defect
D. Red shift
B. Time dilation
Even when an object is not moving, it still has energy due to its mass. This is called:
A. Kinetic energy
B. Gravitational energy
C. Potential energy
D. Theoretical energy
C. Potential energy
In the equations the variable “c” is defined as:
a. constants
b. Charles Law
c. The speed of light
d. 100,000 mi/sec
c. The speed of light
An observer in a rotating system would notice extra apparent forces called:
A. Electric forces
B. Nuclear forces
C. Fictitious forces
D. Weak forces
C. Fictitious forces
To measure the speed of light accurately, you must account for differences in:
A. Temperature
B. Mass
C. Reference Frame
D. Color
C. Reference Frame
An object moving close to the speed of light becomes shorter in the direction of motion. This is known as:
A. Length contraction
B. Time expansion
C. Energy conversion
D. Hyperspace
A. Length contraction
To accelerate an object with mass to the speed of light would require:
A. Zero force
B. Infinite energy
C. 10 newtons of supercharged energy
D. Negative mass
B. Infinite energy
What is the theory of equivalence of mass and energy:
a. Mass is a form of and and can be converted into energy
b. Mass and stored energy have an inverse relationship
c. Energy is determined by mass
d. Amount of mass = amount of energy
a. Mass is a form of and and can be converted into energy
The laws of physics must look the same in all inertial frames because of this principle:
A. Conservation of Mass
B. Thermodynamics
C. Principle of Relativity
D. Quantum Uncertainty
C. Principle of Relativity
In relativity, space and time are combined into a single concept called:
A. Quantum field
B. Space-time
C. Energy web
D. Light grid
B. Space-time
Two events that happen at the same time for one observer may not happen at the same time for another observer. This idea is called:
A. Time dilation
B. Frame dragging
C. Relativity of simultaneity
D. Gravitational pull
C. Relativity of simultaneity
The principle that the laws of physics are the same for observers moving at constant velocities is called:
A. Conservation of Energy
B. Principle of Relativity
C. Heisenberg Principle
D. Law of Inertia
B. Principle of Relativity
What is failure of simultaneity at a distance:
a. Two things didn’t happen from far away
b. Two events that appear simultaneous are not to another observer
c. Failing to do two things at the same time
d. Two things that can happen at the same time
b. Two events that appear simultaneous are not to another observer