Acceleration is defined by Newton's second law of motion as:

Acceleration is defined within the framework of Newton's second law of motion as the net force acting on an object divided by its mass. This relationship highlights how an object's acceleration is directly proportional to the net force applied to it and inversely proportional to its mass. The equation can be expressed mathematically as ( a = \frac{F_{net}}{m} ), where ( a ) represents acceleration, ( F_{net} ) is the net force, and ( m ) is the mass of the object.

This definition underscores the fundamental principles of dynamics and illustrates how external forces influence the motion of an object. For instance, if a greater force is applied to an object, it will accelerate more, provided its mass remains constant. Similarly, for an object with a greater mass, more force is required to achieve the same acceleration. This understanding is crucial when analyzing the motion of objects and understanding the factors that influence their acceleration.