The mass of a typical new, largel cruise ship is about 100,000 metric tons or 100,000,000 kg or 1 x 108 kg. What is the gravitational force between two of these very large cruise ships when their centers are 40 m apart?

They're about 40 m wide so that's as close as they can possibly get.

 F = 4.2 N

 F = 420 N

 F = 42,000 N

 F = 420,000 N

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