Newtons Laws Newtons First Law Newtons Second Law Newtons Third Law By: Andrew Krapohl An object in motion will stay in motion, and an object

at rest, will stay at rest. The force of an object is equal to its mass times its acceleration 4th Hour Every action has an equal and opposite reaction. As long as the ball is not

moving, it will continue to

stay still until acted upon

by and outside force. Which

in this case, the outside force

is Christiano Ronaldo! How neat is that? Andrew Krapohl 5th Hour March 7, 2013 "The law of inertia" Another Example: As long as the golf ball is sitting still, it will remain

completely motionless unless it is acted upon by an

outside force, like a golf club! The more mass, the more inertia! Inertia is the tendency to resist motion! Newton Balls are a perfect example of the third law,

every action has an equal and opposite reaction. when the balls go back and forth they exert the same

amount of energy back through each ball and

knocking the one on the end right back out at the same speed and distance. Depending on how far you

pull back the ball to start it,

determines how far the one on the end will go back, because of Newtons Third Law. Another Example: here is: Action Force (50N) Reaction Force (50N) The force aplied by the batter

is the same force the ball

exerts when it comes off the

bat, so in this example, the

hitter smacks the ball with a

force of 50N and the ball

gives the exact same amount

of force back. (Enough to

break the bat.) In Newtons Third law, the reaction force is always in the exact opposite direction, so in this case, the batter hits the ball with 50N, so the ball recieves 50N of force going forward and the bat recieves the same amount of force going the opposite way, "every action has an equal and opposite reaction." If force = mass x acceleration, then

to increase force you can increase

the mass and/or the acceleration.

In this case, the mass would be

Gary's fist, and the acceleration is

the speed of his hand. Lets say that Gary's fist weighs about 2 pounds, and his hand is moving at 25 meters per second. To find

the force applied into the opponents face, you

multiply those two (25 x 2) and get a force of 50N. Gary 50N Here is another example: Another example of Newtons Second Law is

a car running into a wall. Cars speed - 35 meters/sec

Mass of car - 2,000 pounds

F=MA

F = 35 x 2,000

F = 70,000N of force To increase the force, you can go faster in the car,

or increase the mass of the car. Even though that

is probably more than enough force! Inertia is a property of matter. That's pretty neat! What a Beaut!! The more mass that an object has, the more

inertia it has, so a more massive object will

be harder to move or accelerate!

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# Newtons Laws Project - Andrew Krapohl

4th Hour Science project, due for extra credit on tuesday March 12

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