In Their Common Rest Frame,two Stars Are 90

question 10

Multiple Choice

In their common rest frame,two stars are 90.0 light-years (ly) apart.If they are apart as measured by the navigator in a spaceship traveling between them,how fast is the spaceship moving? Express your answer in terms of c.

• A) 0.991c
• B) 0.986c
• C) 0.980c
• D) 0.972c

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Definitions:

Recognition

The cognitive process of identifying previously encountered information, such as objects, situations, or people, from among available options.

Parallel Processing

Processing many aspects of a stimulus or problem at once.

Automatic Processing

Unconscious encoding of incidental information, such as space, time, and frequency, and of well-learned information, such as word meanings.

Recall

The cognitive process of retrieving information from memory that has been previously learned or experienced.