If an Observer Sees an Object Moving Past Them at 90

question 46

Multiple Choice

If an observer sees an object moving past them at 90% of the speed of light, what will its length appear to be?

• A) The object will look longer than if it were at rest.
• B) The object will look shorter than if it were at rest.
• C) The object will look shorter than if it were at rest while it is coming toward them and longer after it has passed them.
• D) The length of the object will appear to be unchanged from when it is at rest since it is a solid object.

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Definitions:

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Pneumonia

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Negative-pressure Room

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