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an artificial satellite is moving in a circular orbit of radius 42250 km.calculate its speed if it takes 24 hours to revolve around the earth?

Radius of the circular orbit  = 42250 km
Time taken by the satellite to revolve around the earth ,t=24h
Speed of a circular moving object ,v   =  2 ?r/t
                                                          =  2 x 3.14 x 42250
                                                                24 x60 x60
                                                           =  3.07 km/s
  so the speed of the artificial satellite is  3.07km/s                                                        



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