An astronaut throws a wrench in interstellar space. How much force is required to keep the wrench moving continuously with constant velocity?

Select one of the options below as your answer:

A.
a force equal to its weight on Earth

B.
a force equal to zero

C.
a force equal to half of its weight on Earth

D.
a force equal to double its weight on Earth

1 answer

B. a force equal to zero

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