Newtons second low of motion states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.
For a constant mass m, Newton's second law looks like: F = m * (V1 - V0) / (t1 - t0) The change in velocity divided by the change in time is the definition of the acceleration a. The second law then reduces to the more familiar product of a mass and an acceleration: F = m * a.