A voyager forever voyaging

Classical Mechanics Level 2

The Voyager 1 spacecraft is currently about 18.5 billion km from the Earth. How long does it take in seconds for a radio signal to get from Voyager 1 to Earth?

Details and assumptions

  • The speed of light is 3×108 m/s3 \times 10^8~\mbox{m/s}.
David Mattingly by David Mattingly
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