- #1
songoku
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Homework Statement
Tom is in a spaceship without windows and can not know outside condition. How can he know if the ship is moving with constant speed or stops?
a. Measure the apparent speed of light in the spaceship
b. Measure your precision watch. If it runs slower, the spaceship is moving
c. Measure the length of an object. If it is shorter, the spaceship is moving
d. Impossible to determine
Homework Equations
Not sure
The Attempt at a Solution
Option (a) is wrong because speed of light is constant in all frame of reference
Option (b) and (c) are wrong because Tom can not compare his reading with external condition so he can not know whether his time measurement is slower or his length measurement is shorter.
So the answer is (d)?
Thanks