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Calculating the Time Difference Exercise I
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Question 1 of 2
1. Question
Imagine that the treaty signing ceremony is taking place on a train rushing by you at 90 percent of the speed of light. Fast experimenter that you are, you are able to measure the length of the train and find that it is 2000 feet long. From your perspective, how much sooner will the light reach the President of Forwardland compared to the President of Backwardland? Approximate the speed of light by 1 foot/nanosecond and round your answer to the nearest nanosecond.
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Question 2 of 2
2. Question
Imagine you are watching a robot, R2D2, who is sitting in the middle of a spaceship traveling by you at 80 percent of the speed of light. You measure the ship’s length as it rushes by you and find that it is 1,000 feet long. Suddenly, R2D2 fires a laser that sends out two beams, one toward the front of the ship and one toward the rear of the ship. How long will it take each pulse to reach its destination? Approximate the speed of light as 1 foot/nanosecond and round your answers to the nearest nanosecond.
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