Our Best Measurements from Earth Indicate That the Star System

question 55

Multiple Choice

Our best measurements from Earth indicate that the star system Alpha Centauri is 4.2 lightyears away.Suppose some of our astronauts traveled there at a speed v = 0.95 c.What would the astronauts measure as the distance to Alpha Centauri?

• A)4.0 lightyears
• B)2.7 lightyears
• C)1.9 lightyears
• D)1.3 lightyears

---

Definitions:

Yankee Bond

A bond issued by a foreign entity in the United States, denominated in U.S. dollars.

Denominated

Refers to the currency in which a financial obligation or asset is expressed or required to be settled.

Australian Dollars

The currency of Australia, represented by the symbol AUD, and used as the legal tender in Australia and its territories.