FORCES. Force. Combining Forces
|
|
- Sheena Byrd
- 5 years ago
- Views:
Transcription
1 FORCES Force A force is a push or pull upon an object resulting from the object's interaction with another object. The unit of force is the newton (N) 1 newton is the force required to accelerate a mass of 1 kilogram at a rate of 1 meter per second each second. So 1N = 1kg.m/s² Force is a vector unit that has both magnitude and direction Combining Forces Forces can be combined to give a greater or less combined net force. Balanced forces result in net zero force acting on an object and so no change in motion of the object. Unbalanced forces result in non-zero net forces resulting in a change of motion of an object (acceleration) Friction Friction is a force that acts upon an object where it contacts with another object (surface). There are several types of friction: o Static friction o Sliding friction o Rolling friction o Fluid friction Static friction is the friction force that acts on nonmoving objects. Acts in the opposite direction to the force applied to an object. Sliding (kinetic) friction is the friction force opposing the motion of an object as it slides over another object or surface. Rolling friction is the friction force that acts upon rolling objects at the point of contact between objects (or object and surface). 100 to 1000 times less than static or sliding friction.
2 Fluid friction is the friction force that opposes the motion of an object through a fluid (liquid or gas). Increases as velocity increases. Gravity Gravity is an attractive force that acts between any two objects. Objects need not be in contact. Can act over large distances. Normal force acts on objects in contact to counteract gravity. Falling objects subjected to gravity and fluid friction (air resistance) Terminal velocity is reached when gravity and air resistance is equal. Projectile Motion Projectile motion analyzes the motion of an object (the projectile) under the influence of the constant acceleration of gravity, after it has been propelled with some initial velocity. The effect of air resistance may also be included in the analysis. Projectile motion would include, for example, calculating the trajectory of a ball that has been thrown or that of a shell fired from a cannon. Aristotle, Galileo & Newton Aristotle ( BC) incorrectly stated that force is required to keep an object moving. Galileo ( AD) proposed that moving objects not subject to friction would move indefinitely. Isaac Newton ( AD) published Principia in which he defined mass and force and then introduced his laws of motion.
3 Newton s First Law of Motion - "the law of inertia" An object will remain at rest or in motion with a constant velocity unless acted upon by an external force. o All objects resist changes in their state of motion - they tend to "keep on doing what they're doing." Newton s Second Law of Motion According to Newton, an object will only accelerate if there is a net or unbalanced force acting upon it. The presence of an unbalanced force will accelerate an object - changing its speed, its direction, or both its speed and direction. The acceleration of an object is directly proportional to the magnitude of the net force applied to it, and inversely proportional to the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased. Weight and Mass Weight is the force of gravity acting upon an object calculated as a product of mass and acceleration due to gravity acting upon the mass. Weight = mass x acceleration due to gravity W = m x g (where g = 9.8 m/s²)
4 Newton s Third Law of Motion Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first. Or, to every action there is always an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Momentum Momentum can be defined as "mass in motion." All objects have mass; so if an object is moving, then it has momentum - it has its mass in motion. The amount of momentum that an object has is dependent upon two variables: how much stuff is moving and how fast the stuff is moving. Momentum is the product of an objects mass and its velocity. o Momentum = Mass x Velocity o p = m.v o Unit = kg.m/s So a large mass object travelling at high velocity will have a large momentum and a small mass object travelling at a low velocity will have a low momentum A large mass travelling at low velocity may have similar momentum to a small mass travelling at a high velocity Law of Conservation of Momentum If two objects collide in a closed system (no force can leave the system), the total momentum of the objects will remain the same. i.e. If an object A and an object B collide, the momentum lost or gained by object A will be reflected in a gain or loss of momentum in object B.
5 Universal Forces All known forces in the universe can be broken down and grouped into four basic types: 1. The Electromagnetic Force 2. The Strong Force 3. The Weak Force 4. The Gravitational Force Electromagnetic Force Causes electric and magnetic effects such as the repulsion between like electrical charges or the interaction of bar magnets. It is long-ranged, but much weaker than the strong force. It can be attractive or repulsive, and acts only between pieces of matter carrying electrical charge Strong Force The strong force is very strong, but very short-ranged. It acts only over ranges of order centimeters and is responsible for holding the nuclei of atoms together. It is basically attractive, but can be effectively repulsive in some circumstances. Weak Force The weak force is responsible for radioactive decay and neutrino interactions. It has a very short range and, as its name indicates, it is very weak. Gravitational Force The gravitational force is weak, but very long ranged. It is always attractive, and acts between any two pieces of matter in the Universe since mass is its source. F = G*(m1m2) r² Where G is the gravitational constant, m1 and m2 are the masses and r is the distance between the centers of mass.
12.1 Forces and Motion Notes
12.1 Forces and Motion Notes What Is a Force? A is a push or a pull that acts on an object. A force can cause a object to, or it can a object by changing the object s speed or direction. Force can be measured
More informationUnit 4 Forces (Newton s Laws)
Name: Pd: Date: Unit Forces (Newton s Laws) The Nature of Forces force A push or pull exerted on an object. newton A unit of measure that equals the force required to accelerate kilogram of mass at meter
More informationChapter 12 Forces and Motion
Chapter 12 Forces and Motion GOAL: Students will be able to interpret and apply Newton s three laws of motion and analyze the motion of an object in terms of its position, velocity, and acceleration. Standard:
More informationCh Forces & Motion. Forces can: 1. Cause a resting object to move 2. Accelerate a moving object (by changing speed or direction)
Ch. 12 - Forces & Motion Force --> a push or a pull that acts on an object Forces can: 1. Cause a resting object to move 2. Accelerate a moving object (by changing speed or direction) Force is measured
More informationChapter 6. Preview. Section 1 Gravity and Motion. Section 2 Newton s Laws of Motion. Section 3 Momentum. Forces and Motion.
Forces and Motion Preview Section 1 Gravity and Motion Section 2 Newton s Laws of Motion Section 3 Momentum Concept Mapping Section 1 Gravity and Motion Bellringer Answer the following question in your
More informationMeasuring Force You may have measured forces using a spring scale. The of the spring in the scale depends on the amount of (a type of ) acting on it.
Forces 12.1 Name 1 A is a push or a pull that on an. How do forces affect the motion of an object? Measuring Force You may have measured forces using a spring scale. The of the spring in the scale depends
More informationChapter 12 Study Guide
Chapter 12 Study Guide Key Concepts 12.1 12.2 12.3 12.4 A force can cause a resting object to move, or it can accelerate a moving object by changing the object s speed or direction. When the forces on
More informationQuestion: Are distance and time important when describing motion? DESCRIBING MOTION. Motion occurs when an object changes position relative to a.
Question: Are distance and time important when describing motion? DESCRIBING MOTION Motion occurs when an object changes position relative to a. DISTANCE VS. DISPLACEMENT Distance Displacement distance
More informationUnit 1: Mechanical Equilibrium
Unit 1: Mechanical Equilibrium Chapter: Two Mechanical Equilibrium Big Idea / Key Concepts Student Outcomes 2.1: Force 2.2: Mechanical Equilibrium 2.3: Support Force 2.4: Equilibrium for Moving Objects
More informationFORCES. Integrated Science Unit 8. I. Newton s Laws of Motion
Integrated Science Unit 8 FORCES I. Newton s Laws of Motion A. Newton s First Law Sir Isaac Newton 1643 1727 Lincolnshire, England 1. An object at rest remains at rest, and an object in motion maintains
More informationForce, Friction & Gravity Notes
Force, Friction & Gravity Notes Key Terms to Know Speed: The distance traveled by an object within a certain amount of time. Speed = distance/time Velocity: Speed in a given direction Acceleration: The
More informationPhysics for Scientists and Engineers. Chapter 5 Force and Motion
Physics for Scientists and Engineers Chapter 5 Force and Motion Spring, 2008 Ho Jung Paik Force Forces are what cause any change in the velocity of an object The net force is the vector sum of all the
More informationForces. Brought to you by:
Forces Brought to you by: Objects have force because of their mass and inertia Mass is a measure of the amount of matter/particles in a substance. Mass is traditionally measured with a balance. Inertia
More informationCh. 2 The Laws of Motion
Ch. 2 The Laws of Motion Lesson 1 Gravity and Friction Force - A push or pull we pull on a locker handle push a soccer ball or on the computer keys Contact force - push or pull on one object by another
More informationForces. Dynamics FORCEMAN
1 Forces Dynamics FORCEMAN 2 What causes things to move? Forces What is a force? A push or a pull that one body exerts on another. 3 Balanced No change in motion 4 5 Unbalanced If the forces acting on
More informationMotion, Forces, and Energy
Motion, Forces, and Energy What is motion? Motion - when an object changes position Types of Motion There are 2 ways of describing motion: Distance Displacement Distance Distance is the total path traveled.
More informationGo on to the next page.
Chapter 10: The Nature of Force Force a push or a pull Force is a vector (it has direction) just like velocity and acceleration Newton the SI unit for force = kg m/s 2 Net force the combination of all
More informationMotion *All matter in the universe is constantly at motion Motion an object is in motion if its position is changing
Aim: What is motion? Do Now: Have you ever seen a race? Describe what occurred during it. Homework: Vocabulary Define: Motion Point of reference distance displacement speed velocity force Textbook: Read
More information3. What type of force is the woman applying to cart in the illustration below?
Name: Forces and Motion STUDY GUIDE Directions: Answer the following questions. 1. What is a force? a. A type of energy b. The rate at which an object performs work c. A push or a pull d. An object that
More informationMotion. Argument: (i) Forces are needed to keep things moving, because they stop when the forces are taken away (evidence horse pulling a carriage).
1 Motion Aristotle s Study Aristotle s Law of Motion This law of motion was based on false assumptions. He believed that an object moved only if something was pushing it. His arguments were based on everyday
More informationName Class Date. height. Which ball would land first according to Aristotle? Explain.
Skills Worksheet Directed Reading A Section: Gravity and Motion 1. Suppose a baseball and a marble are dropped at the same time from the same height. Which ball would land first according to Aristotle?
More informationChapter 2. Forces & Newton s Laws
Chapter 2 Forces & Newton s Laws 1st thing you need to know Everything from chapter 1 Speed formula Acceleration formula All their units There is only 1 main formula, but some equations will utilize previous
More informationForce - a push or a pull A force described by its strength and by the direction in which it acts The SI unit for force is the newton (N)
Forces Force - a push or a pull A force described by its strength and by the direction in which it acts The SI unit for force is the newton (N) The direction and strength of forces can be represented by
More informationForces and Motion. Reference: Prentice Hall Physical Science: Concepts in Action Chapter 12
Forces and Motion Reference: Prentice Hall Physical Science: Concepts in Action Chapter 12 What is Force? A push or pull that acts on an object Can cause a resting object to move Can accelerate a moving
More informationA N D. c h a p t e r 1 2 M O T I O N F O R C E S
F O R C E S A N D c h a p t e r 1 2 M O T I O N What is a FORCE? A FORCE is a push or pull that acts on an object. A force can cause a resting object to move OR Accelerate a moving object by: changing
More informationProperties of Motion. Force. Examples of Forces. Basics terms and concepts. Isaac Newton
Properties of Motion It took about 2500 years to different generations of philosophers, mathematicians and astronomers to understand Aristotle's theory of Natural Motion and Violent Motion: Falling bodies
More informationA. true. 6. An object is in motion when
1. The SI unit for speed is A. Miles per hour B. meters per second 5. Frictional forces are greatest when both surfaces are rough. A. true B. false 2. The combination of all of the forces acting on an
More informationForce, Friction, Gravity and Newton s Laws. Chapter 3 Lessons 4-6
Force, Friction, Gravity and Newton s Laws Chapter 3 Lessons 4-6 I can... identify when forces add or subtract. calculate the Net Force. explain the difference between balanced and unbalanced forces. force:
More informationWho was Isaac Newton?
Forces & Motion Who was Isaac Newton? Born: December 25, 1643 in England (the same year Galileo died) knighted by Queen Anne in 1705 to become Sir Isaac Newton at age 64 The first person to describe universal
More informationPreview of Period 5: Forces and Newton s Laws
Preview of Period 5: Forces and Newton s Laws 5.1 The Fundamental Forces of Nature What are the four fundamental forces of nature? How do we see their effects? 5.2 Forces and Newton s Laws What causes
More informationChapter 3, Section 3
Chapter 3, Section 3 3 What is force? Motion and Forces A force is a push or pull. Sometimes it is obvious that a force has been applied. But other forces aren t as noticeable. What Is a Force? A force......
More informationForce. The cause of an acceleration or change in an object s motion. Any kind of a push or pull on an object.
Force The cause of an acceleration or change in an object s motion. Any kind of a push or pull on an object. Forces do not always give rise to motion. Forces can be equal and opposite. Force is a vector
More informationMOTION & FORCES. Observing Motion. Speed and Velocity. Distance vs. Displacement CHAPTERS 11 & 12
Observing Motion CHAPTERS 11 & 12 MOTION & FORCES Everything surrounding us is in motion, but it is relative to other object that remain in place. Motion is observed using a frame of reference. Motion
More informationForces. Net force is the combination all of the forces acting on an object. All forces have both size and direction.
Objectives Forces Describe forces, and explain how forces act on objects. Determine the net force when more than one force is acting on an object. Compare balanced and unbalanced forces. Describe ways
More informationAristotle, Galileo, and Newton It took about 2000 years to develop the modern understanding of the relationships between force and motion.
Aristotle, Galileo, and Newton It took about 2000 years to develop the modern understanding of the relationships between force and motion. Aristotle, Galileo, and Newton Aristotle Aristotle made scientific
More informationFORCE. The 4 Fundamental Forces of Nature
FORCE - Force a push or pull. Results only from interaction with another object. Without interaction, forces cannot be present. - Measured in Newtons (N) 1 Newton is the amount of force required to give
More informationForce Test Review. 1. Give two ways to increase acceleration. You can increase acceleration by decreasing mass or increasing force.
Force Test Review 1. Give two ways to increase acceleration. You can increase acceleration by decreasing mass or increasing force. 2. Define weight. The force of gravity on an object at the surface of
More informationNewton s First Law of Motion. Newton s Second Law of Motion. Weight 9/30/2015
Forces Newton s Three Laws of Motion Types of Forces Weight Friction Terminal Velocity Periodic Motion Forces Defined as a push or a pull Types of Forces 1) Gravitational - attractive force that exists
More informationNewton s Laws. A force is simply a push or a pull. Forces are vectors; they have both size and direction.
Newton s Laws Newton s first law: An object will stay at rest or in a state of uniform motion with constant velocity, in a straight line, unless acted upon by an external force. In other words, the bodies
More informationNewton s Laws of Motion
Newton s Laws of Motion Newton s Laws Forces Mass and Weight Serway and Jewett 5.1 to 5.6 Practice: Chapter 5, Objective Questions 2, 11 Conceptual Questions 7, 9, 19, 21 Problems 2, 3, 7, 13 Newton s
More information5 th Grade Force and Motion Study Guide
Name: Date of Test: Vocabulary 5 th Grade Force and Motion Study Guide Motion- a change in position relative to a point of reference, a change in speed, or a change in distance. Point of Reference (Reference
More informationPS113 Chapter 4 Forces and Newton s laws of motion
PS113 Chapter 4 Forces and Newton s laws of motion 1 The concepts of force and mass A force is described as the push or pull between two objects There are two kinds of forces 1. Contact forces where two
More informationTHE LAWS OF MOTION. Mr. Banks 7 th Grade Science
THE LAWS OF MOTION Mr. Banks 7 th Grade Science MOTION Motion is a change in position over a certain amount of time. When you say that something has moved you are describing motion. SPEED Speed is the
More informationPractice Test Chapter 2 Forces and Motion
Practice Test Chapter 2 Forces and Motion Multiple Choice Identify the choice that best completes the statement or answers the question. 1. What happens when a moving bumper car hits a bumper car at rest?
More informationForces. Video Demos. Graphing HW: October 03, 2016
Distance (m or km) : Create a story using the graph. Describe what will be happening at each point during the day (A-D). Example: Trump has a busy day. He is currently at Trump Tower in NY. A- Trump jumps
More informationChapter 2. Force and Newton s Laws
Chapter 2 Force and Newton s Laws 2 1 Newton s First Law Force Force A push or pull that one body exerts on another body. Examples : 2 Categories of Forces Forces Balanced Forces Unbalanced Forces Balanced
More informationChapter: The Laws of Motion
Table of Contents Chapter: The Laws of Motion Section 1: Newton s Second Law Section 2: Gravity Section 3: The Third Law of Motion 1 Newton s Second Law Force, Mass, and Acceleration Newton s first law
More informationThe Concept of Force. field forces d) The gravitational force of attraction between two objects. f) Force a bar magnet exerts on a piece of iron.
Lecture 3 The Laws of Motion OUTLINE 5.1 The Concept of Force 5.2 Newton s First Law and Inertial Frames 5.3 Mass 5.4 Newton s Second Law 5.5 The Gravitational Force and Weight 5.6 Newton s Third Law 5.8
More informationUnit 8B: Forces Newton s Laws of Motion
Unit 8B: Forces Newton s Laws of Motion Indicator PS-5.7: Explain the motion of objects on the basis of Newton s three laws of motion. Objectives 1. State the meaning of Newton s laws of motion in your
More informationl Every object in a state of uniform motion tends to remain in that state of motion unless an
Motion and Machine Unit Notes DO NOT LOSE! Name: Energy Ability to do work To cause something to change move or directions Energy cannot be created or destroyed, but transferred from one form to another.
More informationForce - a push or a pull The SI unit for force is the newton (N)
Forces Force - a push or a pull The SI unit for force is the newton (N) Arrows are used to show the strength of a force and the direction in which it acts; the longer the arrow, the stronger the force
More informationWhat is force? A force is a push or pull. Sometimes it is obvious that a force has been applied. But other forces aren t as noticeable.
Chapter 3, Sec-on 3 3 What is force? Motion and Forces A force is a push or pull. Sometimes it is obvious that a force has been applied. But other forces aren t as noticeable. What Is a Force? A force......
More informationFour naturally occuring forces
Forces System vs Environment: system the object the force is applied to environment the world around the object that exerts the force Type Forces: Contact is applied by touching Long range exerted without
More informationSection 2: Newton s Laws of Motion (p. 145)
Section 2: Newton s Laws of Motion (p. 145) 1. In 1686, published Principia, a work explaining laws to help people understand how forces relate to the of objects. Newton s First Law of Motion (p. 145)
More informationPhysics B Newton s Laws AP Review Packet
Force A force is a push or pull on an object. Forces cause an object to accelerate To speed up To slow down To change direction Unit: Newton (SI system) Newton s First Law The Law of Inertia. A body in
More informationChapter 4 Force and Motion
Chapter 4 Force and Motion Units of Chapter 4 The Concepts of Force and Net Force Inertia and Newton s First Law of Motion Newton s Second Law of Motion Newton s Third Law of Motion More on Newton s Laws:
More informationBEFORE YOU READ. Forces and Motion Gravity and Motion STUDY TIP. After you read this section, you should be able to answer these questions:
CHAPTER 2 1 SECTION Forces and Motion Gravity and Motion BEFORE YOU READ After you read this section, you should be able to answer these questions: How does gravity affect objects? How does air resistance
More informationBroughton High School of Wake County
Name: Section: 1 Section 1: Which picture describes Newton s Laws of Motion? 5. Newton s Law 1. Newton s Law 2. Newton s Law 6. Newton s Law 3. Newton s Law 7. Newton s Law 4. Newton s Law 8. Newton s
More informationChapter 12: Gravity, Friction, & Pressure Physical Science, McDougal-Littell, 2008
SECTION 1 (PP. 381-388): GRAVITY IS A FORCE EXERTED BY MASSES. Georgia Standards: S8P3b Demonstrate the effect of balanced and unbalanced forces on an object in terms of gravity, inertia, and friction;
More information9/5/17. Aristotle on Motion. Galileo's Concept of Inertia. Galileo's Concept of Inertia
Aristotle on Motion Aristotle classified motion into two kinds: Natural motion motion that is straight up or straight down Violent motion imposed motion resulting from an external push or pull Galileo's
More informationChemistry Terms. atomic number The atomic number of an element is the number of protons in the nucleus of each atom.
Chemistry Terms atomic number The atomic number of an element is the number of protons in the nucleus of each atom. chemical reaction A process in which atoms and molecules interact, resulting in the alteration
More informationForces. A force is a push or a pull on an object
Forces Forces A force is a push or a pull on an object Arrows are used to represent forces. The direction of the arrow represent the direction the force that exist or being applied. Forces A net force
More informationExam 2--PHYS 101--F11--Chapters 4, 5, & 6
ame: Exam 2--PHYS 101--F11--Chapters 4, 5, & 6 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Consider this figure. What is the normal force acting on
More informationSECTION 1 (PP ):
FORCES CHANGE MOTION. Georgia Standards: S8P3b Demonstrate the effect of balanced and unbalanced forces on an object in terms of gravity, inertia, and friction; S8CS6a Write clear, step-by-step instructions
More informationChapter 4 Dynamics: Newton s Laws of Motion
Chapter 4 Dynamics: Newton s Laws of Motion Units of Chapter 4 Force Newton s First Law of Motion Mass Newton s Second Law of Motion Newton s Third Law of Motion Weight the Force of Gravity; and the Normal
More informationNewton s 3 rd Law. The Nature of Force. Matthew W. Milligan
Newton s 3 rd Law The Nature of Force Forces Dynamics I. Laws of Motion: 1 & 2 - inertia, force, mass - weight II. Law 3 - interaction & nature of force - types of force: normal, friction - air resistance,
More information12-Newton's law os Motion. The net force acting on a box is 18 newtons upward. The box accelerates at a rate of 3 m/s 2.
Read each question carefully. 1) The net force acting on a box is 18 newtons upward. The box accelerates at a rate of 3 m/s 2. What is the box's mass? 6 kg 15 kg 21 kg 54 kg 2) A motorcycle and a van collide
More informationA force is a push or a pull.
A force is a push or a pull. Contact forces arise from physical contact. Action at adistance forces do not require contact and include gravity and electrical forces. 1 Force is a vector [F]=[Newton]=[N]
More informationFoundations of Physical Science. Unit One: Forces and Motion
Foundations of Physical Science Unit One: Forces and Motion Chapter 3: Forces and Motion 3.1 Force, Mass and Acceleration 3.2 Weight, Gravity and Friction 3.3 Equilibrium, Action and Reaction Learning
More informationMake sure you know the three laws inside and out! You must know the vocabulary too!
Newton's Laws Study Guide Test March 9 th The best plan is to study every night for 15 to 20 minutes. Make sure you know the three laws inside and out! You must know the vocabulary too! Newton s First
More informationChapter 5. Preview. Section 1 Measuring Motion. Section 2 What Is a Force? Section 3 Friction: A Force That Opposes Motion
Matter in Motion Preview Section 1 Measuring Motion Section 2 What Is a Force? Section 3 Friction: A Force That Opposes Motion Section 4 Gravity: A Force of Attraction Concept Mapping Section 1 Measuring
More informationChapter 3 The Laws of motion. The Laws of motion
Chapter 3 The Laws of motion The Laws of motion The Concept of Force. Newton s First Law. Newton s Second Law. Newton s Third Law. Some Applications of Newton s Laws. 1 5.1 The Concept of Force Force:
More informationName Class Date. What are the four fundamental forces in nature? How can forces affect the motion of an object? Why is friction sometime necessary?
CHAPTER 11 SECTION Motion 3 Motion and Force KEY IDEAS As you read this section, keep these questions in mind: What are the four fundamental forces in nature? How can forces affect the motion of an object?
More informationNewton s Laws of Motion. I. Law of Inertia II. F=ma III. Action-Reaction
Newton s Laws of Motion I. Law of Inertia II. F=ma III. Action-Reaction While most people know what Newton's laws say, many people do not know what they mean (or simply do not believe what they mean).
More informationThe Laws of Motion. Newton s first law Force Mass Newton s second law Newton s third law Examples
The Laws of Motion Newton s first law Force Mass Newton s second law Newton s third law Examples Isaac Newton s work represents one of the greatest contributions to science ever made by an individual.
More informationUNIT XX: DYNAMICS AND NEWTON S LAWS. DYNAMICS is the branch of mechanics concerned with the forces that cause motions of bodies
I. Definition of FORCE UNIT XX: DYNAMICS AND NEWTON S LAWS DYNAMICS is the branch of mechanics concerned with the forces that cause motions of bodies FORCE is a quantitative interaction between two (or
More informationPushes and Pulls. Example- an apple falling on a tree exerts a downward force with a magnitude of about 1 newton.
What are Forces? Pushes and Pulls Force- a push or pull that acts on an object. Forces make a moving object speed up, slow down, or change direction. Forces have both magnitude and direction. Magnitude
More informationCan You Snap a Card Out From Under a Coin?
Can You Snap a Card Out From Under a Coin? 1. Balance half of a 3 x 5 index card on the tip of an index finger. 2. Place a penny on the card, just above your fingertip. 3. Give the card a quick horizontal
More informationA force is could described by its magnitude and by the direction in which it acts.
8.2.a Forces Students know a force has both direction and magnitude. P13 A force is could described by its magnitude and by the direction in which it acts. 1. Which of the following could describe the
More informationNewton s Contributions. Calculus Light is composed of rainbow colors Reflecting Telescope Laws of Motion Theory of Gravitation
Newton s Contributions Calculus Light is composed of rainbow colors Reflecting Telescope Laws of Motion Theory of Gravitation Newton s First Law (law of inertia) An object at rest tends to stay at rest
More informationEssentially, the amount of work accomplished can be determined two ways:
1 Work and Energy Work is done on an object that can exert a resisting force and is only accomplished if that object will move. In particular, we can describe work done by a specific object (where a force
More informationTEACHER BACKGROUND INFORMATION FORCE
TEACHER BACKGROUND INFORMATION FORCE WHAT IS FORCE? Force is anything that can change the state of motion of a body. In simpler terms, force is a push or a pull. For example, wind pushing on a flag is
More informationFORCES. Chapter 2: Section 3, Chapter 3: Sections 1-3
FORCES Chapter 2: Section 3, Chapter 3: Sections 1-3 Vocab: 2.3-3.3 DEFINE THESE Force Net force Balanced force Inertia Newton s second law of motion Friction Law of gravitation Weight Newton s third law
More informationDynamics: Forces and Newton s Laws of Motion
Lecture 7 Chapter 5 Dynamics: Forces and Newton s Laws of Motion Course website: http://faculty.uml.edu/andriy_danylov/teaching/physicsi Today we are going to discuss: Chapter 5: Force, Mass: Section 5.1
More informationCircular Motion. A car is traveling around a curve at a steady 45 mph. Is the car accelerating? A. Yes B. No
Circular Motion A car is traveling around a curve at a steady 45 mph. Is the car accelerating? A. Yes B. No Circular Motion A car is traveling around a curve at a steady 45 mph. Which vector shows the
More informationOverview The Laws of Motion
Directed Reading for Content Mastery Overview The Laws of Motion Directions: Fill in the blanks using the terms listed below. force inertia momentum sliding conservation of momentum gravitational ma mv
More informationChapter 4. The Laws of Motion
Chapter 4 The Laws of Motion Classical Mechanics Describes the relationship between the motion of objects in our everyday world and the forces acting on them Conditions when Classical Mechanics does not
More information7. Two forces are applied to a 2.0-kilogram block on a frictionless horizontal surface, as shown in the diagram below.
1. Which statement about the movement of an object with zero acceleration is true? The object must be at rest. The object must be slowing down. The object may be speeding up. The object may be in motion.
More informationCHAPTER 9 FORCE AND LAWS OF MOTION
CHAPTER 9 FORCE AND LAWS OF MOTION Q 1. What is a force? Ans: Force is a push or pull which tries to bring the change in the state of rest or of uniform motion in a straight line. Unit of force: force
More informationDirected Reading A. Section: Gravity: A Force of Attraction. force of. THE EFFECTS OF GRAVITY ON MATTER. of.
Skills Worksheet Directed Reading A Section: Gravity: A Force of Attraction 1. The force of attraction between two objects that is due to their masses is the force of. 2. Why do astronauts on the moon
More informationIsaac Newton ( ) 1687 Published Principia Invented Calculus 3 Laws of Motion Universal Law of Gravity
Isaac Newton (1642-1727) 1687 Published Principia Invented Calculus 3 Laws of Motion Universal Law of Gravity Newton s First Law (Law of Inertia) An object will remain at rest or in a constant state of
More informationWhat is a Force? Free-Body diagrams. Contact vs. At-a-Distance 11/28/2016. Forces and Newton s Laws of Motion
Forces and Newton s Laws of Motion What is a Force? In generic terms: a force is a push or a pull exerted on an object that could cause one of the following to occur: A linear acceleration of the object
More informationUnit 2 Forces. Fundamental Forces
Lesson14.notebook July 10, 2013 Unit 2 Forces Fundamental Forces Today's goal: I can identify/name applied forces and draw appropriate free body diagrams (FBD's). There are 4 fundamental forces Gravity
More informationNewton s Third Law of Motion Newton s Law of Gravitation Buoyancy Momentum. 3-2 Section 3.4
Martha Casquete Newton s Third Law of Motion Newton s Law of Gravitation Buoyancy Momentum 3-2 Section 3.4 Net force/balance and unbalance forces Newton s First Law of Motion/Law of Inertia Newton s Second
More informationNewton s first law. Projectile Motion. Newton s First Law. Newton s First Law
Newton s first law Projectile Motion Reading Supplemental Textbook Material Chapter 13 Pages 88-95 An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same
More information100 Physics Facts. 1. The standard international unit (SI unit) for mass (m) is. kg (kilograms) s (seconds)
100 Physics Facts 1. The standard international unit (SI unit) for mass (m) is. kg (kilograms) 2. The standard international unit (SI unit) for time (t) is. s (seconds) 3. The standard international unit
More informationacceleration weight load
Instructions for Vocabulary Cards: Please photocopy the following pages onto heavy card stock (back to back, so the word is printed on the back side of the matching definition). Then, laminate each page.
More informationBalanced forces do not cause an object to change its motion Moving objects will keep moving and stationary objects will stay stationary
Newton s Laws Test 8.PS2.3) Create a demonstration of an object in motion and describe the position, force, and direction of the object. 8.PS2.4) Plan and conduct an investigation to provide evidence that
More informationApplying Newton s Laws
Applying Newton s Laws Free Body Diagrams Draw and label the forces acting on the object. Examples of forces: weight, normal force, air resistance, friction, applied forces (like a push or pull) Velocity
More informationIf there is nothing pushing on an object, it will not move. If there is nothing pushing on an object, it will not stop. The List:
If there is nothing pushing on an object, it will not move. If there is nothing pushing on an object, it will not stop. The List: No Push No Go No Push No Stop No Push No Speed Up No Push No Slow Down
More information