In Their Common Rest Frame, Two Stars Are 90

question 7

Multiple Choice

In their common rest frame, two stars are 90.0 light-years (ly) apart. If they are 12.0 ly 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:

Net Profit Margin

A financial metric showing the amount of each sales dollar left over after all expenses have been paid.

Cash Coverage Ratio

A financial metric used to evaluate a company's ability to pay its debt obligations using its cash and cash equivalents.

Current Liabilities

Obligations of a company that are due to be settled within one year or one operating cycle, whichever is longer.

Operating Activities

The day-to-day actions that involve the production, sales, and delivery of a company's product or service, generating most of the company's cash flows.