Final answer:
Newton's second law of motion states that the acceleration of a system is directly proportional to the net external force acting on the system, and inversely proportional to its mass. In equation form, Newton's second law is F = ma.
Step-by-step explanation:
Newton's second law of motion states that the acceleration of a system is directly proportional to and in the same direction as the net external force acting on the system, and inversely proportional to its mass.
In equation form, Newton's second law of motion is F = ma, where F is the net external force, m is the mass, and a is the acceleration.
This means that if the force acting on an object increases, the object's acceleration will also increase as long as the mass remains constant. Similarly, if the mass of an object increases, the acceleration will decrease if the force remains constant.