Question

Astronauts in three di erent spaceships are communicating
with each other. Those aboard ships A and B agree on the rate at
which time is passing, but they disagree with the ones on ship C.
(a) Alice is aboard ship A. How does she describe the motion of her
own ship, in its frame of reference?
(b) Describe the motion of the other two ships according to Alice.
(c) Give the description according to Betty, whose frame of reference
is ship B.
(d) Do the same for Cathy, aboard ship C.

Draw a Cartesian coordinate system and choose Alice's coordinate system as a stationary coordinate system.

Answer 1