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A train has a rest length of 100 m. Traveling at a very high velocity, it goes through a tunnel of length 80 m. Observers located at both ends of the tunnel note that at one instant the train appears to
exactly fit within the tunnel. Calculate the velocity of the train expressed in units of c?
OA, it is impossible
OB, 0.866c
OC. 0.333c
OD. 0.50c
O E. 0.60c

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