When at Rest, a Spacecraft Has the Same Height as Length

question 20

Multiple Choice

When at rest, a spacecraft has the same height as length. When moving at relativistic speeds in the direction of its length, which one of the following describes its length and height to an observer at rest?

• A) Its length is decreased and its height is increased.
• B) Its length is decreased and its height is decreased.
• C) Its length is decreased and its height is unchanged.
• D) Its length is unchanged and its height is increased.
• E) Its length is increased and its height is decreased.

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