The comet hale-bopp has a period of 2400 years.
(a) what is its mean distance from the sun?
(b) at its closest approach, the comet is about 1.0 au from the sun (1 au = distance from earth to the sun). what is the farthest distance?
(c) what is the ratio of the speed at the closest point to the speed at the farthest point?