A23-newton horizontal force westward and a 23-newton horizontal force eastward act concurrently on a 10-kilogram object on a frictionless surface. what is the magnitude of the object’s acceleration? 1) 0.0 meters/second^2 2) 1.0 meters/second^2 3) 2.3 meters/second^2 4) 1.5 meters/second^2