ANSWERS: 3
  • Pluto has an orbit 30 to 49 AU away from the sun. To keep its orbit, Pluto has to orbit fast enough to keep from falling inward (toward the sun), and slow enough to keep from flying away. With Pluto's mass being about 1.305E+22 kg and having an orbit path that ranges from 4.4 to 7.4 billion km from the sun, Pluto must keep an orbiting velocity of about 4.666 km/s. This puts the time for Pluto to go around the sun to be around 7.83E+09 s. This comes out to be about 90,600 days or 248 years. Hope this helped.
  • pluto takes the speed 16923/hr to go round the sun
  • v=SQRT(GM/r^2)

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