A spaceship moves past Earth with a speed of 0.868c. As it is
passing, a person on Earth measures the spaceship's length to be
79.7 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.