Question

The net force acting on an stationary object is zero. Which best describes the object’s velocity?
The velocity is zero.
The velocity is decreasing.
The velocity is increasing.
The velocity is constant, but not zero.

Answer 1

well if something's net force is 0 and its stationary and velocity is basically the force at which somethings moving then the answer obvious

Answer 2

Ask these questions in physics, not computers.