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Traveling at the speed of light

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The fastest spacecraft ever launched. The New Horizons mission to Pluto had a long way to travel: about 40AU. Even though it's traveling at an average speed of about 20 km/sec, it took years to get there.

a) About how far did it travel to Pluto in kilometers?

b) How long did it take, in years? (Do a calculation)

c) From there, how long did its radio signal take to reach Earth, traveling at the speed of light (3x108 m/s)?

Reference no: EM131403446

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