The acceleration of the object in the same direction and have the strength to return to the object, the object's mass and inverse to a variable. When the force returned zero do not object.
The acceleration of an object is directly proportional with the same force acting on an object. And inversely proportional to its mass. When a non-zero net force acting on an object.
The acceleration of an object is proportional to the net force and have the same action on objects. And inversely proportional to the mass of the object. When the resultant force size is not zero came with the object.