Question

An object experiences a net zero external unbalanced force. Is it possible for the object to be travelling with a non-zero velocity? If yes, state the conditions that must be placed on the magnitude and direction of the velocity. If no, provide a reason.

Answer 1

No an object cannot move with net force zero

Answer 2

Yes, it is possible. But the condition is that the unbalanced forces acting on the object must be equal in magnitude and opposite in direction. The object will travel by a uniform speed as told in Newton's First law of motion i.e. "an object will always be in the rest or uniform motion unless an external net unbalanced force act on it."