An Astronaut Leaves Earth in a Spaceship at a Speed

question 1

Multiple Choice

An astronaut leaves Earth in a spaceship at a speed of 0.960c relative to an observer on Earth.The astronaut's destination is a star system 14.4 light-years away.(One light-year is the distance light travels in one year.) According to the astronaut,how long does the trip take?

• A) 14.4 y
• B) 22.7 y
• C) 9.34 y
• D) 15.0 y
• E) 4.20 y

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