# Newton's Laws in Physics

## Newton's First Law of Motion - Inertia

Newton's law of Inertia explains how an object at rest stays in rest until a force acts upon it, so the object is changing it's state of motion.

When you are in the car and the car suddenly stops at a halt or hits something, your body falls forward. This is an example of inertia because you're body is in the same position as it was before until the car stops at full force and your body is thrown forward. Also in relation, the faster the car stops, the more acceleration your body has and it will be thrown even further. (This is why we wear seat belts!)

## Newton's Second Law of Motion - F=ma

Newton's second law tells us that as the amount of force applied increases, the

acceleration of the object increases too.

The harder you kick a soccer ball, the higher it goes into the air, or the farther it travels across the field. This is an example of acceleration and force because the more force you put into the kick, the higher the acceleration which causes the ball to fly higher into the sky or fly farther across the field.

## Newton's Third Law of Motion - Action and Reaction

Newton's third law explains to us that when the object is acted upon by a force, the object has some sort of reaction to the force.

When a pebble is thrown into the lake, the still water now creates ripples. This is an example of action reaction because, the pebble has a gravitational force on the water as it hits the water and the water has reaction by creating the ripples.