Think you’ve got your head wrapped around Special Relativity? Put your knowledge to
the test. Good luck — the Stickman is counting on you!
Q. According to Albert Einstein, time:
is relative to the movement of the ether.
is relative to an observer's measurement.
is relative to how fast light travels.
is relative to an absolute frame of reference.
flows at a constant rate no matter what.
Q. We run one mile in 8 minutes. Igor runs with us and covers half a mile in 8 minutes. What is his velocity relative to us?
Q. 3) A light beam travels at a speed of 
.If the speed of sound is 340.29 
, what is the value of β for sound?
.If the speed of sound is 340.29 , what is the value of β for sound? 3.00000340 × 108
3 × 108
2.99999660 × 108
1.13 × 10-6
It depends on how Earth moves relative to the ether.
Q. Two clocks are synchronized with remarkable precision. One is put aboard the Concord, a jet that moves at the speed of sound (340.29 \; \mathrm{\frac{m}{s}}). One is left on Earth. The Concord flies around Earth 5 times. What can be said about the two clocks once the Concord lands back on Earth?
The Earth clock will display a time interval smaller than the Concord clock.
The Concord clock will display a time interval smaller than the Earth clock.
Both time intervals will be identical since the speed of sound is constant.
The time intervals cannot be measured, because β is too small.
Both time intervals will be the same, but their values will depend on whether the Concord flew in the same direction as Earth's rotation.
Q. Twins both embark on the spaceship from Planet of the Apes, which travels at a speed of 0.9999837c and spend 5 years exploring space and 5 years coming back home. How much time has elapsed on Earth when they return?
0.175 years
1.75 years
17.5 years
1750 years
17500 years
Q. What displacement did they travel aboard the spaceship from Planet of the Apes?
9.46 × 108 m
5.41 × 1014 m
0 m
1.66 × 1019 m
It depends on the speed of the spaceship relative to Earth.
Q. Two events occur at the same location but travel at less than c. These two events are:
simultaneous
spacelike
timelike
lightlike
a violation of causality
Q. An electron has a rest mass of 
and is accelerated to a speed of 0.8c. What amount of mass does it gain?
and is accelerated to a speed of 0.8c. What amount of mass does it gain? 
The electron does not gain any mass.
Q. What amount of the electron's total energy is due to its velocity?
853 keV
342.4 keV
408.8 keV
682.7 keV
The electron does not gain any energy due to velocity.
Q. What is the electron's momentum?
e) The electron does not have any momentum.