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Chapter 5.2 Friction at the Sochi Winter Olympics
Friction friction is the force that opposes motion.
Causes of friction Surfaces have tiny hills and valleys on both sides. As the surfaces slide across each other the hills and valleys grind against each other.
Causes of friction Friction depends on both surfaces.
Types of Friction Static friction - friction force that resists motion between surfaces that are not moving.
Types of Friction Sliding friction - the friction force that resists the motion of an object moving across a surface.
Types of Friction rolling friction - opposes motion of a rolling object.
Types of Friction air friction - a force of the surrounding fluid (air) working against motion
Types of Friction
Motion through water - viscous friction works much like air friction.
Effect of weight on friction Adding weight to a sliding or rolling object adds friction between the two surfaces. Which takes more force to push?
Decreasing Friction 1. Lubrication - such as oil 2. ballbearings 3. Magnetic Levitation
Increasing Friction 1. cleats
Increasing Friction 2. Race tires vs Street Tires - Street Tires increased friction in wet conditions. - Race tires increased friction on dry roads.
Sci. 1-3 Friction: A Force that Opposes Motion Pages
What is a force? How do forces combine? How does friction affect motion?
Chapter 2, Section 3 Friction. Friction Definition: a force that opposes motion between two surfaces that touch. Example: Tires on a street.
What is Friction? How does it work? 1. 2 Friction is a Force Force on person by box Force of friction on floor by box Force of friction on box by floor.
PLEASE TAKE OUT YOUR HOMEWORK. Friction - a force that opposes motion, or “pushes back” when two surfaces are touching. It’s always around and it affects.
Two main causes Friction Friction Two solid objects sliding against each other. Two solid objects sliding against each other. Drag Drag The backwards.
Monday October 14, 2013 Agenda: I can identify key terms about forces and motion. Daily Science: What is the basic SI unit for length? Learning target.
Balanced and Unbalanced Forces How do balanced and unbalanced forces affect an object's motion?
Section 13-2 Friction Friction Force that opposes the motion of an object Created when surfaces rub together.
"The most beautiful thing we can experience is the mysterious... It is the source of all true art and all science." - Einstein.
Ch 10.3 Forces Force: action on an object to change state of rest or motion (accelerate) (push or pull on object … “baby”answer) Objects change motion.
< BackNext >PreviewMain Section 3 Friction: A Force That Opposes Motion Chapter 12 What You Will Learn Friction Magnitude (size) Kinetic friction Static.
Chapter 5 Matter In Motion Section 3 – Friction: A Force That Opposes Motion p
C. Friction Friction force that opposes motion between 2 surfaces depends on the: types of surfaces force between the surfaces.
The Force of Friction Friction opposes motion between two surfaces that touch each other. The amount of friction depends on.....
What is friction? Friction is the force that opposes the motion of an object Friction is when two things rub against each other If you push a book across.
Force Physical Science 12 Basic 5. Force is a push or pull All forces have a size and direction. A force can change the acceleration of an object. (size.
THE LAWS OF MOTION. KEY CONCEPTS AND QUESTIONS- OBJECTIVES What are some contact forces and some noncontact forces? What is the law of universal gravitation?
Friction. Four Types of Friction: 1.Static Friction: -- Friction when an object is at rest. -- Due to the microscopic bumps and grooves on the two surfaces.
TYPES OF FRICTION And how to reduce the force due to friction.
This section introduces and describes friction. You will explore the types of friction and study examples of each.
What Causes Friction? Even though a surface may look smooth, if you magnify the surface, you’ll see it isn’t smooth at all. Everything is made of molecules.
Chapter Five: Forces 5.1 Forces 5.2 Friction 5.3 Forces and Equilibrium.
Section 16-3 Friction: A Force That Opposes Motion.
Friction. What Is Friction Friction is a force that opposes motion between two surfaces that are touching.
Chapter 5 Forces 5.2 Friction pp IMPORTANT DEFINITION ► Friction – a force that opposes motion between two surfaces that are touching.
Physical Science Chapter 12 Matter in Motion Measuring Motion An objects change in position over time when compared to a reference point.
Friction. ACTIVITY!!! Types of Fingerprints ArchesLoops Whorls.
Friction. What is friction? an outside force that happens when two things rub together. It opposes the motion of an object If there were no friction.
Forces in Equilibrium Chapter 5. Section 5.1 The Force Vector.
Chapter 12-3 Part 2 Friction: A Force That Opposes Motion Pages
September 25, 2009 Bellringer Would it be better if the floor at the skating rink had carpet on it? Explain.
FORCES Lesson 1 Friction and Gravity. What is a Force? (p.44) A push or a pull on an object in a particular direction.
Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu The Source of Friction Friction is a force that opposes motion between.
Friction and Gravity. 1. What is friction? The force that two surfaces exert on each other when they rub against each other.
Friction When two surfaces rub together, the irregularities of one surface The force that one surface exerts on another Friction acts in a direction.
Friction. Friction Friction is defined as a force that opposes the motion of objects that touch as they move past each other. Friction is the interaction.
FORCES AND FRICTION Bellringer #6 Bellringer #7 1.A force is: a. Anything that is in motion. b. Any push or pull on an object. c. Anything that reacts.
What is Friction?/Lesson 6 A force that opposes motion between two surfaces that are in contact. Causes a moving object, such as a ball, to slow down and.
Friction Friction is the term is used to describe forces that result from the relative motion between objects.
What is a force? How does friction affect motion?
Motion What causes an object to start moving, stop moving, or change direction???
What do you know about friction?. Follow along as we review the answers to the friction questions. ANSWER THE QUESTIONS ON THE PAPER THAT WAS PASSED.
Forces. What is a Force? A push or a pull. ◦When one object pushes or pulls another object, the first object is exerting a force on the second object.
Chapter 5 - Forces. force – a ____ or ____ on an object causes _____ or causes a moving object ________ or change _______ if a force acts on an.
TYPES OF FORCES AND FRICTION Forces. A force is a push or a pull that acts on an object A force can cause a resting object to move or it can accelerate.
10.3 Force I CAN: -RECOGNIZE FORCE AS A VECTOR QUANTITY THAT HAS BOTH MAGNITUDE AND DIRECTION. -DESCRIBE FRICTION AS A FORCE THAT OPPOSES SLIDING BETWEEN.
Chapter4 RESISTANCE. Friction Forces Friction - a force that opposes motion of two solids or a solid and a fluid Static Friction (F static ) - a force.
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