Newton's Law of Motion
by Ethan Shoemaker
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).
1st law
www.photo-dictionary.com
Rolling a bowling ball, as goes down the alley at a constant speed. The forces on the ball remain equal until the ball hits the pins.
2nd law
hpcharlieb.blogspot.com
A football player tackling the ball carrier. The player with the greater force will break the tackle, or tackle the ball carrier.
3rd law
discoveryexpress.weebly.com
Skateboarding (when you are pushing off of the ground it causes the skateboard to move forward. Action and reaction forces.)
1st law
www.insurancejournal.com
A seat belt restraining you. It adds an unbalanced force, keeping you from going through the windshield.
2nd law
en.wikipedia.org
The player hits the ball with a greater force than the pitcher throwing it.
3rd law
Pushing down on the pedal causes the bike to move forward. Action and reaction forces.
Information sources
Newton's law of motion pg. 200-212