Newtons 3 Laws of Motion

Newtons three laws of motion revolutionized the way we think of the universe and they are as follows.

1. The Law of Inertia. Every object will maintain it's velocity unless an external force acts upon it.
This means that if I'm driving a car at a certain speed and I suddenly stop, I will fly out of the windshield unless I have my seat belt on since the brakes don't stop me from moving.

2. F=ma,
which means that while the mass is directly related to force and the acceleration is directly related to force, mass and acceleration are inversely related themselves.

3. For every force there is an equal and opposite reaction force.
I think this is rather obvious and explains why I can jump off the ground since I'm not giving a force to myself but to the ground which returns the force to me in the opposite direction pushing me up.