First Law of Motion Section 3.2

Slides:

Advertisements

Similar presentations

Advertisements

May the Force Be With You!

The Nature of Force Chapter 10 section 1.

Newton ’ s First Law Law of Inertia. What You Will Learn ► Distinguish between balanced and net forces ► Describe Newton ’ s First Law of motion ► Explain.

FORCES Mrs. Cholak.

Chapter 13 Forces.

Physical Science  This test covers what you learned in Unit 1 including: ◦ Contact and Non-Contact Forces ◦ How to measure motion (speed and velocity)

Newton’s First Law of Motion Newton’s First Law of Motion.

Forces 8th Grade Science

FORCE Chapter 10 Text. Force A push or a pull in a certain direction SI Unit = Newton (N)

Friction Gravity Newton’s Laws Momentum Forces.

Physical Science State Assessment Review S.HS.2B.1.1.

Newton’s Laws of Motion

8 th Science-Force and Newton’s Laws. Newton’s First Law Also known as the Law of Inertia States that an object in motion stays in motion and an object.

Chapter 13 The Nature of Forces.

Section 1 (Part 2): Types of Friction

The Nature of Forces.

Force : Push or pull Newton: unit to measure force Net force: combination of force Unbalance force: object start moving Balance force: object doesn`t move.

The Nature of Force Chapter 3 section 4 What is a force Force is a push or pull. Forces are either balanced or unbalanced.

Chapter 4 Newton’s Laws of Motion. Newton’s First Law of Motion Every object continues in its state of rest, or of uniform motion in a straight line,

Notes Force. Force is a push or pull exerted on some object. Forces cause changes in velocity. The SI unit for force is the Newton. 1 Newton = 1 kg m/s.

FORCES. Force  any push or pull  Example: opening a door  Pushing something across the floor.

Chapter 12.  Force: a push or pull that acts on an object  Key Point: a force can cause a resting object to move or it can accelerate a moving object.

Newton’s Laws of Motion

Chapter 4 Newton’s First Law of Motion: Inertia. Newton’s First Law - Inertia In Fancy Terms: Every object continues in a state of rest, or of motion.

Hosted by Mr. Gomez Force/ Momentum NewtonGravityFriction Final Jeopardy.

Chapter 10 Section 2 Friction.

EQ: What changes an object’s motion?. Friction and Gravity  What happens when you jump on a sled on the side of a snow-covered hill?  What happens at.

Section 1 The Nature of Force

Motion & Forces Force A push or a pull *Cause an object to start moving, stop moving, or change direction.

Balanced and Unbalanced Forces Velocity and Acceleration

Forces Ch 7 6 th grade. 7.1 Vocabulary Force Net force.

1.4 Forces change motion.

FORCES AND MOTION. FORCE A force is any push or pull from one object to another.

Forces. Force is a push or a pull. is a push or a pull. a force is described by its strength and by the direction in which it acts. a force is described.

Motion and Forces Force A push or a pull *Cause an object to start moving, stop moving, or change direction.

Section 1 – Pages Newton’s 1 st Law Chapter 11 Force and Newton’s Laws.

Forces  A force is a PUSH or a PULL.  Described by: 1. Its strength 2. The direction in which it acts  Measured in: Newtons (N)  Measured by: Spring.

Newton’s Laws of Motion 8 th Grade Science. I Can Statements I CAN.. Define Newton’s First Law of Motion and provide real world examples. Explain how.

1 st Law of Motion Courtesy of Sir Isaac Newton. Isaac Newton He lived from 1642 to He was a mathematician and physicist He lived from 1642 to 1727.

- The Nature of FORCES I. WHAT IS A FORCE? a push or a pull its strength the direction NEWTONN a. A force is ___________________ b. A force is described.

Newton’s First Law Newton’s First Law: states that if the net force acting on an object is zero, the object will remain at rest or move in a straight line.

Lesson 6 Objectives Observe the properties of sliding friction. Measure the force of friction on a wooden block pulled across different surfaces. Measure.

Activating Strategy A chair will be placed in the middle of the floor. Teacher question: Are there any forces acting on this chair? Invite a student to.

Newton’s Laws of Motion

Newton’s First Law of Motion

Motion & Forces.

The Nature of Forces.

FRICTION Notes!.

Friction and Gravity Notes

Forces Unit Note-Taking.

Chapter 10 Vocab Review 8th Grade.

Motion and Forces.

Connecting Motion with Force

Standards S8P3. Obtain, evaluate, and communicate information about cause and effect relationships between force, mass, and the motion of objects. Construct.

Friction and Gravity Chapter 10 Section 2.

- The Nature of FORCES.

Forces Georgia Performance Standards

Connecting Motion with Force

Section 1-2 Friction and Gravity.

Chapter 10 force and motion STUDY GUIDE/NOTES

Law of Inertia Inertia is the tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an.

Newton’s Laws of Motion

Force and Motion Shopping Review

Presentation transcript:

First Law of Motion Section 3.2 http://www.physics4kids.com/files/art/motion_laws1_240x180.gif

What do you know? What causes motion? What causes motion to stop? What is friction? http://crossfitinlandvalley.com/wp-content/uploads/2012/09/question-mark.jpg

Arm in Arm Suppose two students are arm wrestling, and neither can bring the other arm down. What can you infer about the forces being exerted? http://image.shutterstock.com/display_pic_with_logo/1158215/110177501/stock-photo-arm-wrestling-110177501.jpg

Newton’s First Law of Motion Newton is recognized as the first person to state the relationship between motion and forces. He observed that and object at rest stays at rest until an outside forces causes it to move. He also observed the opposite. An object at rest will remain at rest and an object in motion will remain in motion unless acted upon by an outside force.

Objects At Rest When you sit in a chair many forces act on you. Atmosphere Chair Gravity All of the forces are balanced therefore, you sit comfortably and you don’t move. Your body is resisting change or experiencing inertia. To come out of inertia a force must be applied. http://www.aaronswansonpt.com/wp-content/uploads/2011/06/Inertia.png

Objects In Motion What happens when you ride a bike? How does the bike start to move? Does it stay in motion even when you’re not doing anything? Forces can change the speed, direction, and overall movement of bike. What forces are acting on the bicyclist in Figure 3.7? What would happen to the bicyclist when the bike stopped?

Friction If everything stayed in motion until a collision caused it to stop or change direction, what would the world be like? Friction acts in the opposite direction of motion. Friction is an outside force that resists motion when two surfaces come in contact.

Types of Friction Without friction, we couldn’t walk without slipping. Friction plays an important role in all aspects of life. There are three main types of friction: Sliding Friction Fluid Friction Rolling Friction http://www.school-for-champions.com/science/images/friction_forces_example.gif

Sliding Friction This occurs when two solid surfaces slide over each other. The friction is determined by the weight of the object and the type of surface it moves over. Heavier objects exert more pressure on the surface therefore the sliding friction will be greater. Which type of surface would cause less sliding friction? http://images.tutorvista.com/cms/images/101/sliding-friction.png

Fluid Friction Air, water, and oil are all fluid. Fluid friction occurs in type of fluid. It is very present when an object falls through the air. https://dr282zn36sxxg.cloudfront.net/datastreams/f-d%3Ad46f1f6ac40b85c6c8d10f5ce3bd108c46946a66caa8c61256a3d43f%2BIMAGE_THUMB_POSTCARD%2BIMAGE_THUMB_POSTCARD.1 https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcReMV13-dtYEwxADzHgxOpjfijFR75RbISwZ4rwSK4VhBRgd9vqfg http://www.ekshiksha.org.in/images_friction_VIII/figure_17.JPG

Rolling Friction Rolling friction- friction produced when an object rolls over a surface. Force needed to overcome rolling friction is less than the force needed to overcome sliding friction. Tread on tires can affect rolling friction. Looking at the tires on page 62, which tire do you think will create more rolling friction? http://whs.wsd.wednet.edu/faculty/busse/mathhomepage/busseclasses/apphysics/studyguides/APPhysics2012/Chapter5_2012/images/05_21Figure.jpg

Reducing Friction Many machines use techniques to reduce friction to help save the parts. Ball bearings Fluids (air, gas, liquid film) http://www.sabearings.com/wp-content/uploads/2013/10/Angular-Contact-Principal.jpg

What have we learned? What is Newton’s first law of motion? Explain how a dog overcomes inertia when it gets up after napping on the floor. Explain how friction works to keep bicycle tires from sliding on the road. Identify two examples each of an object at rest and of an object in motion. Use examples of things in your school. Explain how Newton’s first law applies to each example. https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcTQsvui1Gr27Y87hx2SgrLlFw89VuWr61We9C1LK5kKq8Rgu60w