What is the minimum number of forces that need to be applied to a body in space to keep it moving with a constant velocity?
A) none
B) one force, in a direction opposite to the direction of motion
C) two unequal forces
D) one force, in the direction of motion

Question

Quizplus · Accepted Answer

In space, if a body is already moving, no additional forces are needed to keep it moving with a constant velocity due to Newton's first law of motion, which states that an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

What Is the Minimum Number of Forces That Need to Be