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

B. a force equal to zero

B. a force equal to zero

To determine the amount of force required to keep the wrench moving continuously with constant velocity in interstellar space, we need to understand some basic physics principles.

According to Newton's first law of motion, an object at rest or moving with a constant velocity will continue to do so unless acted upon by an external force. In other words, an object in motion tends to stay in motion unless a force acts on it.

In interstellar space, there is no significant gravitational force. Without any external forces acting on the wrench, it will require zero force to keep it moving with constant velocity.

Therefore, the correct answer is:

B. a force equal to zero