Astronaut Jill leaves Earth in a spaceship and is now traveling at a speed of 0.280c relative to an observer on Earth.When Jill left Earth,the spaceship was equipped with all kinds of scientific instruments,including a meter stick.Now that Jill is underway,how long does she measure the meter stick to be?
A)1.00 m
B)0.960 m
C)1.04 m
D)0.280 m
E)1.28 m

Question

Quizplus · Accepted Answer

Jill, being in the same inertial frame as the meter stick, would measure it to be its proper length, which is 1.00 m. The effects of length contraction are observed from a different inertial frame, not within the same frame as the object.

Astronaut Jill Leaves Earth in a Spaceship and Is Now