One observer stands on a train moving at a constant speed, and one observer stands at rest on the ground. The person on the train stands at the back of the car and turns on a flashlight; the light travels to the front of the car, bounces off a mirror, and returns to the back of the car. The observer on the train measures the time it takes for the light to take this path and knowing the length of the car, he calculates the speed of light. What value does he obtain? a) Greater than cb) Equal to cc) Less than cd) The speed of the light canot be determined without knowing the speed of the train

Question

Physics

Genesis Holland

1 April, 09:23

One observer stands on a train moving at a constant speed, and one observer stands at rest on the ground. The person on the train stands at the back of the car and turns on a flashlight; the light travels to the front of the car, bounces off a mirror, and returns to the back of the car. The observer on the train measures the time it takes for the light to take this path and knowing the length of the car, he calculates the speed of light. What value does he obtain? a) Greater than cb) Equal to cc) Less than cd) The speed of the light canot be determined without knowing the speed of the train

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Answers (1)

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Phoenix Stone · Answer 1

Equal to c (b)

Explanation:

The speed of the light will be Equal to C because the speed of light regardless of the speed of the Train, length of the car and the medium in which the light travels the speed of light remains the same,

The speed of light (c) is equal to : 299792458 m / s and no object can travel faster than light therefore the speed of light from the flashlight will remain the same over the whole time it travels through the medium or distance that it is found.