Two observers move past each other and look at each other's clock.The acceleration of both is zero and their relative speed is 0.750 c.Observer one looks at observer two's clock and sees that it's running more slowly than hers.What does observer two see?
A)Observer one's clock is running more quickly than her clock.
B)Observer one's clock is running more slowly than her clock.
C)Observer one's clock is running at the same rate as her clock.
D)Observer one's clock has stopped running.

Question

Quizplus · Accepted Answer

According to Einstein's theory of relativity, time dilation occurs when two observers are moving at different speeds relative to each other. In this scenario, observer one is moving relative to observer two, and therefore experiences time dilation. This means that observer two sees observer one's clock running more slowly than his own clock. Therefore, observer two would choose option B.

Two Observers Move Past Each Other and Look at Each