Forces act on objects that are free to move. Newton's second law of motion allows us to
determine the mass of an object if we know the magnitude of the force and the mass of the
object__.
Velocity
Acceleration
Speed
Distance
Option(B) is correct because the acceleration of an object produced by the resultant force is proportional to the magnitude of the resultant force, in the same direction as the resultant force, and inversely proportional to the mass of the object. We know the mass of an object and the intensity of the force exerted on it. Therefore, using Newton's second law of motion, we can
determine the acceleration of an object.
Choice (a) is incorrect because velocity is the directional velocity of a moving object, as an indication of the rate of change in position as perceived from a particular frame of reference and measured by a particular time standard
Choice (c) is incorrect because an object's velocity (often called v) is the amount of its position change over time or the amount of its position change per unit time; so, it's a scalar.
Choice (d) is incorrect because distance is a numerical or sometimes qualitative measure of the distance between objects or points. In physics or common usage, distance can refer to a physical length or an estimate based on other criteria.