According to newton’s second law of motion when an object is acted on by an unbalanced force how will that object respond

according to newton's second law , the net force on an object is the product of mass and the acceleration of the object. The formula is given as

= m a

where m = mass of the object  and a = acceleration of the object.

when an unbalanced force acts on an object , there is a net force acting on the object and hence the object accelerate as a result.

hence the object accelerate in the direction of net force.

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.