If an observer on the ground uses her own instruments to measure the speed of th
ID: 2238260 • Letter: I
Question
If an observer on the ground uses her own instruments to measure the speed of the light in Question 7 (see below), will she obain a value less that, greater than, or equal to? Explain your answer (Question 7 - An observer on a train in the following figure stands in the back of the car. He turns on a light and measures the time it takes for the light to get to the front of the car bounce off a miorror and return to him. (Assume he is traveling in a vacuum.) Knowing the length of the car, he can calculate the speed of light.Explanation / Answer
He obtain correct value because he is standing on the train, hence relative velocity between observer and train is zero.