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Can a Rock Be Accelerated Up to Lightspeed

Question 109

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Can a rock be accelerated up to lightspeed?


A) No, because any material object's length decreases to zero as the object approaches lightspeed.
B) No, because the theory of relativity states that it is impossible for anything to move at lightspeed.
C) No, because any material object's mass becomes infinite as the object approaches lightspeed.
D) Yes, as we can see from the example of light itself.
E) Yes, by projecting the object at a sufficiently high speed from a reference frame that is already moving at a high speed.

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