# Newton's Law of Motion

## Newtons 1st law / Inertia

Newtons first law states: An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Inertia is the tendency in an object to resist a change in motion. Friction, a force that opposes motion between to objects. Examples are; rolling a bowling ball, as it goes down the alley it remains a constant speed. A seat belt restraining you.

## Newtons 2nd law / Force and Acceleration

The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. Acceleration, the rate at which velocity changes over time. Examples would be; a baseball player hitting a home run, and a football player tackling the ball carrier.

## Newtons 3rd law / Action and Reaction

For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. Examples are: Skateboarding (when you are pushing off of the ground), and riding a bike (pedaling).

## Information sources

Newton's law of motion pg. 200-212