Final answer:
Newton's second law of motion is represented by the formula F = ma, which describes the relationship between force, mass, and acceleration.
Step-by-step explanation:
The formula that indicates Newton's second law of motion is F = ma, where 'F' is the net force applied to an object, 'm' is the mass of the object, and 'a' is the acceleration of the object. This law essentially states that the acceleration of an object is directly proportional to the net force acting upon it and inversely proportional to its mass. The law can also be understood in terms of momentum, where the change in momentum (Δp) over time is equal to the net external force applied to the system, and momentum is the product of mass and velocity of the object (Δp = Δ(mv)). Newton’s second law is foundational in understanding the relationship between an object's mass, the forces applied to it, and how it moves.