F=ma, where F is the force acting on an object, m stands for an object's mass, and a is the object's acceleration.
What is Newton's Third Law of Motion?
"For every action, there is an equal and opposite reaction."
What is the law of universal gravitation?
Two objects attract each other with a force that is proportional to the product of their masses, and inversely proportional to the square of the distance between them. Ex: Gravity