Question

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

Answer 1

B. a force equal to zero