Explain Newton's second law of motion.

Newton’s second law of motion stated that the acceleration of an object produced by a net force is directly proportional to the magnitude of the net force in the same direction of the net force and inversely proportional to the mass of the object.

The equation is,  $a=\frac{F_{net}}{m} $           

Where, $a$=acceleration, $F_{net}$=Net force, $m$=mass.

The equation can be rearranged as  $F=ma$