Question

If unbalanced net force on on object is zero then can it move with non zero velocity

Answer 1

if it was in motion then it will continue to be in motion there will be no change in the velocity but if was and rest than velocity is 0

Answer 2

THE Equation which calculates the force on an unbalanced system is :-

F - Mg=Ma,

where M is mass,

a is acceleration,

g is gravity, and

F is the force.

As you can see, the equation does not have any relation with the velocity of a body.

Therefore, the body starts to move with a non-zero ACCELERATION, rather that a non-zero VELOCITY.

Hope you get it,

Best of luck.