Velma's rocket ship is moving away from Mort at a speed of 0.75c. Mort fires a laser beam toward her spaceship, observing the tip of the laser beam to move away from him at speed c. Velma observes this laser beam to move past her at a speed of
A) 1.75c.
B) 0.25c.
C) 0.75c.
D) 1.25c.
E) None of the above.
Question 2
Which of the following statements best describes the limitations of Newtonian physics?
A) At very high speeds, Newtonian physics gives very incorrect predictions, and is correct in other situations.
B) At very high speeds, or at very small sizes, or for gases and liquids, Newtonian physics gives very incorrect predictions.
C) Newtonian physics is approximately correct, to within 1 or 2 percent, in all situations.
D) At high speeds, or at small sizes, or for large distances, Newtonian physics is incorrect.
E) As far as we know, Newtonian physics is correct in all situations.
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