A passenger is on a spaceship traveling at 0.8 c. The passenger observes that her watch
A) is running slow.
B) is running fast.
C) is keeping time as usual.
D) is running slow if the ship is traveling in the positive direction.
E) is running slow if the ship is traveling in the negative direction.

Question

Quizplus · Accepted Answer

The passenger's watch will keep time as usual from her own perspective because time dilation affects observations from an outside frame, not the passenger's own frame of reference.

A Passenger Is on a Spaceship Traveling at 0