Leah Is Moving in a Spaceship at a Constant Velocity

question 42

Multiple Choice

Leah is moving in a spaceship at a constant velocity away from a group of stars. Which one of the following statements indicates a method by which she can determine her absolute velocity through space?

• A)She can measure her increase in mass.
• B)She can measure the contraction of her ship.
• C)She can measure the vibration frequency of a quartz crystal.
• D)She can measure the change in total energy of her ship.
• E)She can perform no measurement to determine this quantity.

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