A spaceship moves past Earth with a speed of 0.908c. As it is passing, a person on Earth measures the spaceship's length to be 71.7 m.

(a)

Determine the spaceship's proper length (in m).

m

(b)

Determine the time (in s) required for the spaceship to pass a point on Earth as measured by a person on Earth.

s

(c)

Determine the time (in s) required for the spaceship to pass a point on Earth as measured by an astronaut onboard the spaceship.

s