Improvements

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Improvements

• Notes may need help?
• More demos!
• Also maybe something about looking at force
  diagrams and telling what an object will dowhat
  direction it will accelerate. Add velocity in
  there toothis could help us lead to circular
  motion! Like if its moving right and it
  accelerates down, what will its path look like.
  Stress that net force and acceleration are same
  direction.
• Include the idea of relative velocityeverything
  is moving!
• For freefalldrop bottle with holes in it and
  itll stop spilling water.
• Use the physics classroom website more!

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• Take your homework out!

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Bell Work 12/1/15 5 min

1. What are some things Sir Issac Newton did?
2. W5SAYWoS

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Schedule

• Wednesday
• Finished gathering data for friction lab
• Tuesday
• Notes on Sir Issac Newton
• Friction lab graphs
• Wednesday
• Turn in labs
• Return quizzes update grade sheet
• Notes!
• HW Newtons 1st Law Study Guide
• Thursday
• .Review HW
• Notes on Newtons 2nd Law
• Friday
• Catapults due!!!

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• Today you are going toread about and take notes
  on Newton and Newtons 1st Law of Motion.
• So you canknow who Newton is, what he did, and
  how his first law is applied.
• Youll know youve got it when you can
• Accurately complete the notes sheet questions

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• Who was Issac Newton?

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Issac Newton

• VIDEO!

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Bell Work 4/23/14 4 min

1. What is one strange experiment conducted by
   Newton?
2. What book did Newton write?
3. Convert 80.0 lbs to Newtons using the factor
   label method. Show your work.

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Issac Newton

• Born Christmas 1642
• Failure as a farmer
• Was waiter in college to pay for first 3 years
• 1664 Elected a scholarfree school! ?
• 1665 Plague closed his school 1665 ?

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Issac Newton

• Worked on math physics at home for 2 years
• figured out calculus, optics, the law of gravity
  and the three laws of motion.
• 1667 worked on alchemy
• Invented reflecting telescope
• King Charles II excused Newton from taking holy
  orders

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Issac Newton

• 1686 published Principia
• Changed mans views on universe
• Appointed Master of Mint in London
• Knighted by Queen Anne
• Argued with people about who should be credited
  for invention of calculus gravitation
• VIDEO!

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Bell Work 12/2/15 5 min

1. Complete the free body diagram worksheet.

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Bell Work 12/2/15 5 min

• Draw a free body diagram of a car driving
  straight with a constant velocity of 60 mi/hr.

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Newtons 1st Law of Motion

• An object at rest stays at rest and an object in
  motion stays in motion with the same speed and
  direction unless acted on by an unbalanced force.
  
• Objects "tend to keep on doing what they're
  doing.

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• An object at rest stays at rest and an object in
  motion stays in motion with the same speed and
  direction unless acted on by an unbalanced force.
  
• If the net force is zero
• An object at rest will stay there
• A moving object will keep moving with a constant
  velocity

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• An object at rest stays at rest and an object in
  motion stays in motion with the same speed and
  direction unless acted on by an unbalanced force.
  
• If the net force is NOT zero
• The object will ____________, ____________, or
  ________________.

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Newtons 1st Law of Motion

• If you start an object moving, it will keep
  moving with a constant velocity forever unless
  something pushes or pulls on it.
• A force is not required to keep things
  movingits required to make them stop (or turn)!
• Why dont we notice this?
• _____ _____ make things slow down stop
• When we throw things, _____pulls them back to
  Earth.

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Newtons 1st Law of Motion
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Inertia

• Newtons 1st law is sometimes referred to as the
  Law of Inertia.
• Inertia objects resistance to a change in
  motion. (Its NOT a force!)
• Mass can be defined as a measurement of inertia,
  because the more matter an object has, the more
  it resists being moved.
• Measured in ______
• Glass of water example!

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Inertia
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Inertia
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Explain the following examples of inertia.
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Inertia
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Inertia
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Inertia
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Bell Work 12/3/15 2 min

1. To get the ketchup out of a ketchup bottle,
   turns upside down and thrusts downward at high
   speeds and then abruptly halted. Use Newtons
   1st law to explain how this works.

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Schedule

• Tuesday 12/1
• Notes on Sir Issac Newton
• Friction lab graphs
• Wednesday
• Turn in labs
• Return quizzes update grade sheet
• Notes!
• Thursday
• Notes!
• HW Newtons 1st Law Study Guide
• Friday
• Review HW
• Notes on Newtons 2nd Law
• Catapults due!!!

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Notes Questions

• Aside from weight, why would it be difficult
  playing softball using a bowling ball? (like on
  moon)
• Why do you slide towards the side of a car when
  the driver makes a sharp turn?

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Notes Questions

• Aside from weight, why would it be difficult
  playing softball using a bowling ball? (like on
  moon)
• A bowling ball has too much inertia (mass), so
  you couldnt hit it far.
• Why do you slide towards the side of a car when
  the driver makes a sharp turn?
• The force of friction between the tires and the
  road makes the car turn. No force makes your
  body turn, so it goes straight.

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Examples of Newtons 1st Law

• 1 2 on notes. Well look at a few, pick two
  you understand.

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Inertia
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Examples of Newtons 1st law

• A car has the criuzee control on and is going
  straight. What are the forces acting on the car?
  What is the net force acting on the car?
• The car wrecks into a tree. How is Newtons 1st
  law related to what happens to the objects inside
  the car?

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Moving Example

• Blood rushes from your head to your feet while
  quickly stopping when riding on a descending
  elevator.
• The head of a hammer can be tightened onto the
  wooden handle by banging the bottom of the handle
  against a hard surface.

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Non moving example

• A brick is painlessly broken over the hand of a
  physics teacher by slamming it with a hammer.
  (CAUTION do not attempt this at home!)

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Nonmoving Examples

• Cement block broken on chest of someone laying on
  bed of nails
• Hammer nail into board on a few books on
  someones head
• A car is sitting at a red light another car
  crashes into it from behind. There are no
  headrests, and the peoples heads seem to fly
  backwards.

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Which has more inertia?

• An elephant a mouse
• A basketball a shot put
• Mr. Murray Mr. Shuster
• A cat sitting Same cat running

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Preguntas

• T or F If Fnet 0 than V 0
• What causes a moving object to change direction?

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Preguntas

• If the forces acting upon an object are balanced,
  then the object
• a. must not be moving.
• b. must be moving with a constant velocity.
• c. must not be accelerating.
• d. none of these

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Bell Work 12/4/15 5 min

• Study Guide! Catapult! Friction Lab!
• Write all aspects of Newtons 1st law.
• The head of the hammer is loose. How could
  slamming it on a surface as shown in diagram A
  work to tighten it?
• Why would it be better than doing it the other
  way? (diagram b)
• A. B.

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Bell Work 12/8/15 1 min

1. Take your study guide out!

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Newtons 2nd Law of Motion

• Density! Paper ball container.
• D M
• V
• Density and mass are (directly/inversely)
  related. If you double the mass, the density
  ___________.
• Density and volume are (directly/inversely)
  related. If you double the volume , the density
  ___________.

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Newtons 2nd Law of Motion

• Fnet a are in same direction.
• Remember to use the NET FORCE (total force) in
  this equation.
• a Fnet .
• m

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Newtons 2nd Law of Motion

• The acceleration that results from a net force
  is
• _________proportional to the force,
• _________ proportional to the mass,
• and in the same direction as the net force.
• a Fnet .
• m
• Fnet ma

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Newtons 2nd Law of Motion
a Fnet . m

• Acceleration is _____________________
  proportional to the net force. If the net force
  doubles, the acceleration _______.
• Acceleration is _____________________
  proportional to the mass. If the mass is
  doubled, the acceleration is _______.

a Fnet . m
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Newtons 2nd Law of Motion

• The acceleration in the same direction as the net
  force.
• Kind of tricky thingthe object wont necessarily
  go that direction, but it will _______ that
  direction. (It may __________ in that direction
  or _______ .)
• Ex ball thrown, ignoring air resistance

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Newtons 2nd Law of Motion

• Caitlyn is pushing a grocery cart from rest as
  hard as she can. If she uses the same amount of
  force to push a second grocery cart that has 4
  times the mass, how will the acceleration
  compare?
• Madi is stronger than Caitlyn. If Madi pushes
  the same cart with 3 times the force, how will
  the acceleration compare?

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Online Problems

• http//www.batesville.k12.in.us/physics/Phynet/Mec
  hanics/Newton2/Second_Law_Quiz.htmlconcept20quiz

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STOP
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Bell Work 3/31/11 4 min

1. Force is __ related to acceleration
2. If the force doubles, the acceleration __.
3. Mass is __ related to acceleration
4. If the mass doubles, the acceleration __.
5. One Newton will make 1 kg accelerate at a rate of
   __.
6. How many Newtons will it take to make a 100 kg
   object accelerate at 500 m/s2?

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Bell Work 4/16/12 5 minutes

1. If you were on the surface of Pluto, how would
   your mass and your weight compare to when youre
   on Earth. Why?
2. W5SAYWoS

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Schedule

• Monday
• Finish reviewing ze study guide
• Review whats on test
• Students ask questions!
• Tuesday
• Jeopardy!
• Wednesday
• Test!
• Thursday
• Work Energy Reading Guide
• Friday
• Work Energy Notes

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Whats on test?

• Gravity Projectile Motion Study Guide
• All except 2, 9, 14-16, 18
• Circular Motion
• All except 8
• Chapter 11 Study Guide
• All
• Newtons 3rd Law Review
• All (5 questions)

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Skip slide!

• Cool video with inertia and stuff
• What about how fast you pull and inertia?
• http//www.youtube.com/watch?v32q1g7lHAFQ

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Bell Work 3/26/12 4 min

1. Convert 150.0 lbs to Newtons using the factor
   label method. Show your work.
2. A force of 80.0 N acts on a 5.0 kg object.
   Whats its acceleration?

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Bell Work 3/26/12 4 min

1. A force of 80.0 lbs acts on an object with a mass
   of 5.0 kg. Whats its acceleration?

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Bell Work 4/13/12 4 min

1. Take your homework out place it upside down on
   your desk.
2. Bill has a mass of 65 kg. Find his weight in
   Newtons.
3. Convert bills weight to pounds using the factor
   label method.

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To Study For Test

• gravity projectile motion study guide
• 10 Questions on Circular Motion wkst
• Back of gravity projectile motion study guide
• 5 Questions on Newtons 3rd Law Review!
• Chapter 11 Study Guide

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Bell Work 4/4 5 min

1. F ? M 20.0 kg a 8.5 m/s2
2. If a force of 20 Newtons is exerted on a 5 kg
   ball, what will its acceleration be? (Fma)

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• Study 11.1 Laws of Motion Reading Guide, Demo
  Sheet, your notes
• State all aspects of Newtons 1st Law
• Explain an example of Newtons 1st Law
• Define inertia
• Define mass

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Preguntas

• T or F If Fnet 0 than V 0
• What causes a moving object to change direction?

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Preguntas

• If the forces acting upon an object are balanced,
  then the object
• a. must not be moving.
• b. must be moving with a constant velocity.
• c. must not be accelerating.
• d. none of these

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Kylie Marie Gansor Sam Arnold