35. Special Relativity

Special Vs. Galilean Relativity

Multiple Choice
How did Einstein reconcile the idea that motion is relative with the observation that the speed of light $c$ is constant in all inertial frames?
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Multiple Choice
You are a passenger on a spaceship. As the speed of the spaceship increases and approaches the speed of light, which of the following effects would you observe according to special relativity?
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Multiple Choice
Suppose there is an astronaut who is traveling at a significant fraction of the speed of light $c$ relative to Earth. According to special relativity, which of the following effects would the astronaut experience compared to an observer at rest on Earth?
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Multiple Choice
Which of the following statements is true concerning special relativity?
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Multiple Choice
Jill can throw a ball at a speed of 80mph, consistently, on the ground. She gets into the back of a truck, which drives down the road in the $+ x -direction$ direction at 30mph. Jill faces the back of the truck and throws a ball. According to Galilean relativity, what is the $x -component$ component of the velocity of the ball relative to the ground?
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Multiple Choice
Sam is cruising in his spaceship moving at $0.9 c$ . Suzy is directly in front of Sam and is at rest. Suzy flashes her headlights at Sam, hoping he will slow down. According to Sam, how fast is the light from Suzy's headlights moving as it approaches him?
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Multiple Choice
Olive the astronaut is flying her spaceship back home to earth at $0.9 c$ . Her spaceship has lights on it; one at the front of her ship, and one at the back of the ship. Olive notes that the two lights flash simultaneously. Are they simultaneous according to an Earth-based observer? If not, which one blinked first?
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Textbook Question
A newspaper delivery boy is riding his bicycle down the street at 5.0 m/s. He can throw a paper at a speed of 8.0 m/s. What is the paper's speed relative to the ground if he throws the paper (a) forward, (b) backward, and (c) to the side?
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