Newton’s Laws of Motions Scrapbook Basic Physics Honors

Newton’s 1st Law of Motion
An object stays in constant velocity until and unbalanced force is exerted upon it.

[pic] ~The water of the waterfall will keep falling due to gravity.

~The papers on the wall stay at rest until wind blows at it. [pic]

[pic] ~The trophy on the table stays at rest until it is taken.

[pic] ~The cup on the table stays at rest until a hand grabs it.

~The turtle keeps on swimming in the water with nothing stopping it. [pic]

Newton’s 2nd Law of Motion
Acceleration depends on mass and force.

[pic] ~It will take a lot more force to throw the basketball than the tennis since mass resists change.

[pic] ~ It will take more energy (force) to eat the bread with the cheese on it since it has more mass.

~ The Ferris wheel will go faster when there are less people. [pic]

[pic] ~ The airplane accelerates with the force provided by its engines.

~It will take more force for a rooster to move than a chick. [pic]

Newton’s 3rd Law of Motion
For every action, there’s a equal and opposite reaction.

[pic] ~ While the finger is pressing down on a piano key, the key is pushing upwards toward the finger.

~The tension of the strings is holding it up when gravity is pulling it down. [pic]

[pic] ~The stuffed animals are being pulled down by gravity but supported by the rack.

~When the bumper boats bump into each other,
their own boats will also move backward a little as a reaction. [pic]

[pic] ~The cake is being pulled down by gravity but held up by the table.

[pic]
~The Newton Balls is a great example of this law, however many balls you release on one side, that amount will also come out from the other side.

...Force & Motion
Isaac Newton – English physicist & mathematician.
Newton’s First Law of Motion(Law of Inertia):
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 unbalance force.
An object at rest tends to remain at rest. An object in motion tends to move at a constant speed in a straight line unless acted upon by an unbalanced external force.
Newton’s Second Law of Motion(Law of Acceleration):
An object’s acceleration is directly proportional to the net force acting on it and is inversely proportional to the object’s mass.
Newton’s Third Law of Motion(Law of Interaction):
For every action, there is always an equal and opposite reaction.
Force is any interaction which tends to change the motion of an object. It can also be described by intuitive concepts such as a push or pull.
Unbalanced Forces
An object is said to be acted upon by an unbalanced force only when there is an individual force that is not being balanced by a force of equal magnitude and in the opposite direction.
Direct proportion- means that when one factor increases, the other factor also increases and vice versa.
Inverse proportion- means that when one factor increases, the other factor decreases....

...Newton's Laws
Name:
Inertia and Mass
Read from Lesson 1 of the Newton's Laws chapter at The Physics Classroom:
http://www.physicsclassroom.com/Class/newtlaws/u2l1a.html
http://www.physicsclassroom.com/Class/newtlaws/u2l1b.html
MOP Connection:
Newton's Laws: sublevel 1
1.
Inertia is
2.
The amount of inertia possessed by an object is dependent solely upon its __________.
3.
Two bricks are resting on edge of the lab table. Shirley Sheshort stands on her toes and spots the
two bricks. She acquires an intense desire to know which of the two bricks are most massive. Since
Shirley is vertically challenged, she is unable to reach high enough and lift the bricks; she can
however reach high enough to give the bricks a push. Discuss how the process of pushing the bricks
will allow Shirley to determine which of the two bricks is most massive. What difference will
Shirley observe and how can this observation lead to the necessary conclusion?
4.
Would Shirley Sheshort be able to conduct this same study if she was on a spaceship in a location in
space far from the influence of significant gravitational forces? _______ Explain your answer.
5.
If a moose were chasing you through the woods, its enormous mass would be very threatening. But
if you zigzagged, then its great mass would be to your advantage. Explain why.
6.
Inertia can best be described as _____.
a. the force which keeps moving...

...Physics 31N: Newton’s First Law
Item 1
Two forces have the same magnitude F.
Part A
What is the angle between the two vectors if their sum has a magnitude of 2F?
θ = 0∘
Part B
What is the angle between the two vectors if their sum has a magnitude of 2√F?
θ = 90∘
Part C
What is the angle between the two vectors if their sum has a magnitude of zero?
θ = 180∘
Item 2
An object is moving in the absence of a net force. Which of the following best describes the object's motion?
*The object will continue to move with a constant velocity.
Item 3
An object is moving with constant velocity. Which of the following best describes the force(s) acting on the object?
*The net force acting on the object is zero.
Item 4
A constant net force acts on an object. Which of the following best describes the object's motion?
*The object is moving with a constant acceleration.
Item 5
The same net force is applied to two different objects. The second object has twice the mass of the first object. Compare the acceleration of the two objects.
*The acceleration of object 1 is twice the acceleration of object 2.
Item 6
An object is at rest on a tabletop. Earth pulls downward on this object with a force equal in magnitude to mg. If this force serves as the action force, what is the reaction force in the action–reaction pair?
*The object pulling upward on Earth
Item 7
A large truck collides head-on with a small car. The...

...Describe how the car moved when
you released the end of the straw.
When I released the end of the
straw the car was propelled forward
across the floor.
Explain how the motion of the car after you released
the end of the straw demonstrates
Newton’s three laws of motion.
•Newton’s three laws of motion. Newton’s First Law of Motion states, “Every
object continues in a state of rest, or inmotion in a straight line at constant
speed, unless it is compelled to change that state by an unbalanced force
exerted upon it.” The change was the thrust made when the straw was
released.
•Newton’s Second Law of Motion states, “The acceleration produced by an
unbalanced force on an object is directly proportional to the magnitude of
the force, is in the same direction as the force, and is inversely proportional to
the mass of the object.” The force of the balloon caused an unbalanced force.
•Newton's Third Law of Motion states, "Every action has an equal and
opposite reaction". In this experiment, the air escaping through the straw
(the thrust that made it go) is the action while the car's propulsion across the
room in the opposite direction is the reaction.
Define friction, explain how it influenced your model car, and state
where the friction came
from
• Friction: Frictional force is the force exerted by
a surface as...

...NEWTON’S LAWS OF MOTION
Newton's First Law of Motion
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.
There are two parts to this statement - one that predicts the behavior of stationary objects and the other that predicts the behavior of moving objects. The two parts are summarized in the following diagram.
The behavior of all objects can be described by saying that objects tend to "keep on doing what they're doing" (unless acted upon by an unbalanced force). If at rest, they will continue in this same state of rest. If in motion with an eastward velocity of 5 m/s, they will continue in this same state of motion (5 m/s, East). If in motion with a leftward velocity of 2 m/s, they will continue in this same state of motion (2 m/s, left). The state of motion of an object is maintained as long as the object is not acted upon by an unbalanced force. All objects resist changes in their state of motion - they tend to "keep on doing what they're doing."
EXAMPLES:
1. Suppose that you filled a baking dish to the rim with water and walked around an oval track making an attempt to complete a lap in the least amount of time. The water would have a tendency to spill from the container during...

...
Newton’s Three Laws of Motion
Sir Isaac Newton first introduced his three laws in 1686. Newton’s Three Laws of Motion not only improved math and science all over the world, but they played a major role in the development of human beings giving us a better understanding of the world in which we live and the laws that each and every one of us follow. Newton’s first law is law of inertia, which is a restatement of Galileo’s idea, an object in rest stays in rest or an object in motion stays in motion unless acted upon by an outside force. Newton’s second law states acceleration is proportional to the magnitude of the net force, is in the same direction, and is inversely proportional to the mass of the object. Newton’s third law, action and reaction, states for every action there is an equal and opposite reaction.
The first of Newton’s three laws is the law of Inertia. The law of inertia is, every object continues in a state of rest, or of motion in a straight line at a constant speed, unless it is compelled to change that state by forces exerted upon it. In short an object at rest stays at rest and an object in motion stays in motion unless acted upon by an outside force. There are two types of motion;...

...
Bernoulli’s Principle and Newton’s Laws of Motion
Embry-Riddle University
Bernoulli’s Principle and Newton’s Laws of Motion
Bernoulli’s Principle
In fluid dynamics, Bernoulli’s principles states that an increase in the speed of the fluid corresponds to a decrease in pressure of the same fluid. Similarly, the decrease in pressure corresponds to a loss in the potential energy of the fluid. The principle is applicable to various types of fluids, which leads to Bernoulli’s equation. There are different types of Bernoulli’s equation depending on the nature of fluid in use. The principle is valid for most compressible and incompressible fluids at low Mach numbers (less than 0.3). For this principle, fluid particles are only subject to pressure and its own weight.
The principle of conservation of energy comes handy in deriving the Bernoulli’s principle. This law of conservation of energy holds that as long as a system is isolated from external factors/interference, the total amount of energy inside the system remains constant despite the energy transformation that also takes place. Therefore, the total sum of mechanical energy for a steady flow of fluid remains the same at all points in a streamline (University of Leeds, 2008). At a constant sum of kinetic and potential energy, an increase in the velocity of the fluid occurs when there is an increase in its...

...the breaking force,
(2) the time required to stop.
(3) What will be the stopping distance if the initial speed is 100km/h?
Solution.
Most of problems from Dynamics can be seen as “two parts problem”, one involving kinematics and the other - dynamics. This is a consequence of Newton’s Second Law - Force is a product of mass and acceleration.
Acceleration by itself is a purely “kinematical” problem. When mass is involved, we go into Dynamics.
In our problem the following are given:
m = 1200 kg – mass of the car,
v1 = 50 km/h – initial speed in the first case,
D1 = 20m – stopping distance in the first case,
v2 = 100 km/h – initial speed in the second case.
We are suppose to find:
F = ? – magnitude of breaking force,
t = ? – the time required to stop,
D2 = ?<="" p="">
We write down formulas which involved the unknown quantities,
F = ma (1)
a = v1/t (2)
D1 = v1t –(1/2) a t2 (3)
Some explanations:
Formula (1) is simply Newton’s Second Law of Motion,
formula (2) – the speed decreases from v1 to 0 during time t. Assuming constant breaking force means constant acceleration (deceleration or acceleration directed opposite to direction of motion in this problem), and (2) is the definition of such acceleration.
We have three equations with three unknown – that is what algebra requires.
From (2)
t = v1/a (4)
substituting (4) into (3) we get
(5)
and after a little...

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