Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass. Specifically, the acceleration of an object depends on the net force applied and is inversely proportional to the object's mass, such that acceleration equals net force divided by mass. Mass refers to the amount of matter in an object, while weight is the measure of gravitational force acting on the object and depends on location.