Special Relativity/ Physics Chpt. 28 ( Relativity) Review/ physics and relativity worksheet/ Physics Special Theory of Relativity combined together New 2025/2026

Special Relativity/ Physics Chpt. 28 ( Relativity) Review/
physics and relativity worksheet/ Physics Special Theory
of Relativity combined together New 2025/2026

Which of the following are basic postulates of special relativity? - Correct Answers The speed of
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light is the same for all observers.
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The laws of physics are the same in all inertial reference frames.
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Il` If you were in a spaceship traveling close to the speed of light with respect to Earth, you
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would notice that - Correct Answers none of the above effects occur.
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Il` One of Einstein's postulates in formulating the special theory of relativity was that the laws
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of physics are the same in reference frames that - Correct Answers move at constant velocity
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with respect to an inertial frame.
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Il` A 30-year-old astronaut goes off on a long-term mission in a spacecraft that travels at speeds
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Il` close to that of light. The mission lasts exactly 20 years as measured on Earth. Biologically
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Il` speaking, at the end of the mission, the astronaut's age would be - Correct Answers less than 50
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Il` years.



Il` Suppose one twin takes a ride in a spaceship traveling at a very high speed to a distant star and
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Il` then back again, while the other twin remains on Earth. Compared to the twin who remained on
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Il` Earth, the astronaut twin is - Correct Answers younger than the Earth-twin
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Il` You are a passenger on a spaceship. As the speed of the spaceship increases, you will observe -
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Il` Correct Answers no change in the length of your spaceship. Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il`

, Il` An astronaut is resting on a bed inclined at an angle above the floor of a spaceship, as shown in
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Il` the figure. From the point of view of an observer who sees the spaceship moving near the speed
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Il` of light parallel to the floor, the angle the bed makes with the floor - Correct Answers is greater
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Il` than the angle observed by the astronaut.
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Physics Chpt. 28 ( Relativity) Review Il` Il` Il` Il` Il`




The distance was too short and the measured time included the added reaction times of two
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observers - Correct Answers What was wrong with Galileo's procedure for measuring the speed
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of light?
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Il` 1/8Of a rotation in the time required for the light to go back and forth between the mountains -
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Il` Correct Answers When an image of the light source became visible in Michelson's experiment,
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Il` how fast was the mirror rotating? Il` Il` Il` Il` Il`




Il` 2.99792458 x 10(8) m/s - Correct Answers What is a currently accepted value of the speed of Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il` Il`




Il` light?



Il` That light in every direction must be going at the same speed. - Correct Answers What was
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Il` discovered by Michelson and Morley? What hypothesis was then discarded? Il` Il` Il` Il` Il` Il` Il` Il` Il`




Il` That the speed of light is the same for every observer regardless of his motion. - Correct Answers
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What is a fundamental assumption of special relativity?
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Il` The speed of light is an absolute limit for velocity in the universe - Correct Answers What was
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Il` the first tenet of special relativity?
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Il` If an observer of two moving objects measuresHow fast they are moving apart coming together,
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Il` the loss of these so determined will not be the same as the velocity of one object as seen from the
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Il` other. - Correct Answers What was the second tenet of special relativity?
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