Length Contraction: an Astronaut Leaves Earth in a Spaceship at a Speed

question 40

Multiple Choice

Length contraction: 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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Definitions:

Ethical Principle

Fundamental guidelines or rules that help govern behaviors and decisions, often in professional and philosophical contexts, based on concepts of right and wrong.

Autonomy

The right or condition of self-government.

Participant's Consent

The agreement by a participant to take part in a study or experiment, given with full understanding of the risks and benefits involved.

Risk-Averse Cultures

Societies or organizational environments that prefer to minimize risks, leading to more cautious decision-making and often avoiding actions that could lead to uncertain outcomes.