Kim is in a spaceship moving past you at half the speed of light. Which of the following correctly describes how you will perceive each other's time?
A) You will say that Kim's time is running slow, and she will say that your time is running fast.
B) You will say that Kim's time is running slow, and she will say that your time is running slow.
C) You will say that Kim's time is running fast, and she will say that your time is running slow.
D) You will both agree that time runs at the same rate for both of you.
Question 2
In the Ptolemaic model, retrograde motion is due to
A) relative motion between the Earth and another planet in its orbit
B) the Earth reversing the direction of its orbit about the Sun
C) a planet moving backwards in its smaller circular circle, the center of which moves in a larger circular orbit around the Earth
D) a planet reversing the direction of its orbit about the Sun
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