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Worksheetsphysics theory of relativity
Total questions: 10
Worksheet time: 6mins
According to the special theory of relativity, physical laws are the same in frames of reference which
move in circles
move in ellipses.
accelerate
move at uniform velocity
Clocks in a moving reference frame, compared to identical clocks in a stationary reference frame, appear to run
at the same rate
slower
faster.
backward in time.
A spaceship, moving away from the Earth at a speed of 0.9c, fires a light beam backward. An observer on Earth would see the light arriving at a speed of
c.
more than 0.1c but less than c.
0.1c.
more than c but less than 1.9c
The term "relativistic" refers to effects that are
noticed about a moving object
observed when objects move backward in time.
observed when speeds are near the speed of light.
nothingness
The purpose of the Michelson-Morley experiment was to
(a)
A spaceship approaches the Moon, traveling at 0.5c with respect to the Moon. Its crew shines a laser at the Moon. The beam strikes a lunar mirror and is reflected back to the ship. The crew on the ship will measure the speed of the reflected
c.
1.5c.
1.7c.
1.9c.
A train has a rest length of 100 m. Traveling at a very high velocity, it goes through a tunnel of length 80 m. Observers located at both ends of the tunnel note that at one instant the train appears to exactly fit within the tunnel. What is the velocity of the train expressed in units of c?
(a)
Starship "Alpha" is traveling at 0.8c (γ = 5/3) with respect to the identical starship "Beta." Each starship has rest length 10,000 m. The ship's engineer aboard the "Beta" measures the length of the "Alpha" as it passes by his window. What result should he get?
6,000 m
8,000 m
12,000m
17,000 m
A spaceship, moving toward the Earth at a speed of 0.9c, shines a green laser at Earth. An observer on Earth would see the light arriving at a speed of
0.1c but at a smaller frequency.
c but at a shorter wavelength.
1.9c and with a shorter wavelength
1.7c and with a shorter wavelength
The decay of a sample of radioactive atoms is studied by observers moving in different ways. One moves at 0.8c, another at 0.5c, another at 0.25c, and one at speed zero with respect to the sample. The one with a speed of _________ will measure the shortest half-life.
Zero
0.5c
0.9c
0.6c
