Velma passes Mort at a high speed. According to Mort, his clock has progressed by one hour while Velma's clock progressed by only 40 minutes. What does Velma observe?
A) Mort's clock progressed by one hour while Velma's clock progressed by 80 minutes.
B) Mort's clock progressed by one hour while Velma's progressed by 40 minutes.
C) Mort's clock progressed by 40 minutes while Velma's clock progressed by one hour.
D) both clocks progressed by one hour.
E) The answer cannot be determined, because we don't know Velma's speed.

Question

Quizplus · Accepted Answer

According to the theory of relativity, each observer sees the other's clock as running slower. So, Velma would observe Mort's clock progressing by 40 minutes while her own progresses by one hour.

Velma Passes Mort at a High Speed