Question

A spacecraft is traveling in space with no resultant force and no resultant moment acting on it.
Which statement about the spacecraft is correct?
A. Its direction is changing.
B. It is in equilibrium.
C. Its speed is decreasing.
D. Its speed is increasing.

Answer 1

Answer:

B

Explanation:

As the question states that there's no resultant force acting on the spacecraft (acceleration = 0m/s2), hence, it will not experience any change of velocity (speed) or change of direction. In scientific terms, it is indeed in equilibrium.