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The Deep Impact flyby spacecraft has a mass of 650 kg. When it passes by comet Hartley 2 on Nov. 4th, 2010, it?
The Deep Impact flyby spacecraft has a mass of 650 kg. When it passes by comet Hartley 2 on Nov. 4th, 2010, it will be 0.14 AU from the earth, 1.1 AU from the sun and 7.0x102 km from the comet, at closest approach. An AU is an astronomical unit, and is 1.5x107 km. Using the masses of the Sun and Earth from the front cover of the book, and a mass of 1.8x1013 kg for the comet,
Calculate the magnitude of the gravitational attraction between the spacecraft and
(a) the Sun,
(b) the Earth,
and
(c) comet Hartley 2.
