A spaceship is moving away from an observer at relativistic speed.Its length at rest is 100 m,but the observer measures its length as 60 m.A time interval of 84 s on the spaceship would be measured by the observer to be which of the following?
A)50.4 s
B)30.2 s
C)134 s
D)140 s
E)84 s

Question

A spaceship is moving away from an observer at relativistic speed.Its length at rest is 100 m,but the observer measures its length as 60 m.A time interval of 84 s on the spaceship would be measured by the observer to be which of the following?
A)50.4 s
B)30.2 s
C)134 s
D)140 s
E)​84 s

Quizplus · Accepted Answer

The Answer of A spaceship is moving away from an observer at relativistic speed.Its length at rest is 100 m,but the observer measures its length as 60 m.A time interval of 84 s on the spaceship would be measured by the observer to be which of the following?
A)50.4 s
B)30.2 s
C)134 s
D)140 s
E)​84 s

A Spaceship Is Moving Away from an Observer at Relativistic