Newton's Laws of Motion
By: Taylor Glissman
How Were the Laws Created?
~Newton's First Law of Motion~
Newton's Law of Inertia
An object at rest will stay at rest unless acted upon by an unbalanced force.
An object in motion will remain in motion at the same speed and direction unless acted upon by an unbalanced force.
Inertia: an object's tendency to resist change in motion (The greater an object's mass is, the greater its inertia)
-Real Life Examples of Newton's Law of Inertia-
Crashing a Motorcycle
The motorcycle rider was in motion as the bike was moving and continued moving even when the bike stopped. The object in motion was the rider and the motorcycle and the unbalanced force was the obstacle in the way.
Penny and Cup Trick
The penny starts at a resting point. When the index card is moved out from under the penny, the penny falls straight down into the cup. The object a rest, remains at rest.
Crashing a Motorcycle
~Newton's Second Law of Motion~
Newton's Law of Acceleration
The acceleration of an object by a force is inversely proportional to the mass of the object and directly proportional to the force applied.
The acceleration of the object depends on the mass of the object and the amount of force applied to the object
-Real Life Examples of Newton's Law of Acceleration-
The first image shows the brick being moved. The next image shows that the same brick, but more force being pushed against it. It accelerates twice as much due to more force being added. The last picture shows that twice the force on twice the mass gives the same acceleration.
Two baseballs are being thrown across a yard. Both baseballs are being thrown at the same force. Their only difference is one's mass is 15g and the other's is 20g. The 15g ball accelerates faster than the 20g ball because it has a smaller mass, therefore, taking less force to throw the ball a longer distance.
~Newton's Third Law of Motion~
Newton's Law of Action/Reaction
For every action, there is an equal and opposite reaction.
An action force causes a reaction force that is equal in size and opposite in direction.
-Real Life Examples of Newton's Law of Action/Reaction-
When the ball does down, it bounces back up as and equal and opposite reaction.
When releasing a ball on one side, it returns and hits the other balls, resorting to the end balls moving as an equal and opposite reaction.
One Last Thing...
If you didn't notice before, I purposely made the background of this poster a golf course. This is because, in this location, all three laws of motion take place.
Law 1: The golf ball sits at rest on the tee until the golfer (unbalanced force) hits the ball, sending it flying in motion.
Law 2: Two golf balls with the same mass land in two different spots on the green because one was hit with more force than the other, causing it to accelerate more.
Law 3: When the golf ball lands on the ground after flying, it bounces back in the air with an equal and opposite reaction it had as it landed on the ground.
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Digital image. Http://zebu.uoregon.edu/~imamura/121/lecture-3/law2a.gif. N.p., n.d. Web.
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