A Rocket Is Traveling Away from Earth at 90% the Speed

question 104

Short Answer

A rocket is traveling away from Earth at 90% the speed of light. The captain turns on a
laser light. What is the speed of the light as measured by an Earth-based astronomer if the
captain aims the laser (a) directly forward or (b) directly backward?

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Definitions:

Drawer

The person who writes or issues a check or draft, instructing a bank to pay a specified sum of money to a specified person or entity.

Payee

An individual or entity that is designated to receive a payment or financial transaction.

Nonnegotiable

Refers to a financial instrument that cannot be transferred or endorsed to another party.

Separate Agreement

A distinct contract or arrangement that is made independently from any other agreements or contracts.