The heavier the burden, the slower the transformation.

Newton’s Second Law describes how forces change the motion of an object, most famously expressed as F = ma. It states that an object’s acceleration depends on the net force acting upon it and inversely on its mass. Push harder and acceleration increases; add mass and the same push accomplishes less. The law transforms the everyday idea of force into a precise mathematical relationship, allowing motion to be predicted from the forces involved. From falling objects to speeding vehicles, it provides the basic machinery for analyzing how things move. It is used primarily in mechanical engineering, classical physics, and aerospace engineering.