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№1 слайд![Newton s Laws of Motion Laws](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img0.jpg)
Содержание слайда: Newton’s Laws of Motion
3 Laws
№2 слайд![For Free Science Videos for](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img1.jpg)
Содержание слайда: For Free
Science Videos
for Kids
№3 слайд![](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img2.jpg)
№4 слайд![Background Sir Isaac Newton -](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img3.jpg)
Содержание слайда: Background
Sir Isaac Newton (1643-1727) an English scientist and mathematician famous for his discovery of the law of gravity also discovered the three laws of motion.
He published them in his book Philosophiae Naturalis Principia Mathematica (mathematic principles of natural philosophy) in 1687.
Today these 3 laws are known as Newton’s Laws of Motion and describe the motion of all objects on the scale we experience in our everyday lives.
№5 слайд![If I have ever made any](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img4.jpg)
Содержание слайда: “If I have ever made any valuable discoveries, it has been owing more to patient attention, than to any other talent.”
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Sir Isaac Newton
№6 слайд![Newton s Laws of Motion . An](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img5.jpg)
Содержание слайда: Newton’s Laws of Motion
1. An object in motion tends to stay in motion and an object at rest tends to stay at rest unless acted upon by an unbalanced force.
2. Force equals mass times acceleration
(F = ma).
3. For every action there is an equal and opposite reaction.
№7 слайд![Newton s First Law An object](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img6.jpg)
Содержание слайда: Newton’s First Law
An object at rest tends to stay at rest and an object in motion tends to stay in motion unless acted upon by an unbalanced force.
№8 слайд![What does this mean?](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img7.jpg)
Содержание слайда: What does this mean?
Basically, an object will “keep doing what it was doing” unless acted on by an unbalanced force.
If the object was sitting still, it will remain stationary. If it was moving at a constant velocity, it will keep moving.
It takes force to change the motion of an object.
№9 слайд![What is meant by unbalanced](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img8.jpg)
Содержание слайда: What is meant by unbalanced force?
№10 слайд![Some Examples from Real Life](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img9.jpg)
Содержание слайда: Some Examples from Real Life
Two teams are playing tug of war. They are both exerting equal force on the rope in opposite directions. This balanced force results in no change of motion.
№11 слайд![Newton s First Law is also](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img10.jpg)
Содержание слайда: Newton’s First Law is also called the Law of Inertia
Inertia: the tendency of an object to resist changes in its state of motion
The First Law states that all objects have inertia. The more mass an object has, the more inertia it has (and the harder it is to change its motion).
№12 слайд![More Examples from Real Life](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img11.jpg)
Содержание слайда: More Examples from Real Life
№13 слайд![If objects in motion tend to](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img12.jpg)
Содержание слайда: If objects in motion tend to stay in motion, why don’t moving objects keep moving forever?
№14 слайд![](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img13.jpg)
№15 слайд![Newton s Second Law Force](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img14.jpg)
Содержание слайда: Newton’s Second Law
Force equals mass times acceleration.
F = ma
№16 слайд![What does F ma mean? Force is](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img15.jpg)
Содержание слайда: What does F = ma mean?
Force is directly proportional to mass and acceleration. Imagine a ball of a certain mass moving at a certain acceleration. This ball has a certain force.
№17 слайд![More about F ma If you double](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img16.jpg)
Содержание слайда: More about F = ma
If you double the mass, you double the force. If you double the acceleration, you double the force.
What if you double the mass and the acceleration?
(2m)(2a) = 4F
Doubling the mass and the acceleration quadruples the force.
So . . . what if you decrease the mass by half? How much force would the object have now?
№18 слайд![What does F ma say?](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img17.jpg)
Содержание слайда: What does F = ma say?
№19 слайд![Newton s Third Law For every](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img18.jpg)
Содержание слайда: Newton’s Third Law
For every action there is an equal and opposite reaction.
№20 слайд![What does this mean?](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img19.jpg)
Содержание слайда: What does this mean?
№21 слайд![Think about it . . .](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img20.jpg)
Содержание слайда: Think about it . . .
№22 слайд![Review](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img21.jpg)
Содержание слайда: Review
№23 слайд![Vocabulary](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img22.jpg)
Содержание слайда: Vocabulary
№24 слайд![For Free Science Videos for](/documents_6/5ad33d6b18d4c241261bffc217835cd2/img23.jpg)
Содержание слайда: For Free
Science Videos
for Kids