Balanced and Unbalanced Forces Velocity and Acceleration

Slides:

Advertisements

Similar presentations

Section 2.1 Outline Forces Change Motion.

Advertisements

Forces & Motion. Motion A change in the position of an object Caused by force (a push or pull)

Newton’s First Law Pg What is Force? Force is a push or a pull. Examples include: Wind pushing a flag A magnet pulling iron towards it.

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.

Balanced and Unbalanced Forces Velocity and Acceleration Force and Motion.

Forces & Motion Unit Vocabulary

Bellringer Get out essentials and turn to homework Read article on your desk forces Write questions and answers in isn.

What is net force?.

$200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $ 300 $400 $500 $100 $200 $300 $400 $500 $100 What is a Force? Newton’s.

The Nature of Forces.

Lesson 3 Reading Guide - Vocab

Forces & Newton’s Laws Ch. 4. Forces What is a force? –Push or pull one body exerts on another –Units = Newton (N) –Examples: List all of the forces that.

Newton’s 1 st Law Inertia. Force  Any push or pull acting on an object  Most forces require contact between two objects (Contact Forces) Ex. Motor lifts.

Chapter 12: Forces and Motion

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 Ch.10 “May the Force be with You”. I. Force All forces are exerted by one object on another object. All forces are exerted by one object on another.

Forces and Newton’s Laws

Physics The study of physical forces and qualities: the scientific study of matter, energy, force, and motion, and the way they relate to each other The.

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

PHYSICS Vocab Squares FORCE & MOTION

Forces and Motion Unit Vocabulary. Newton’s 1 st law Law states: An object at rest stays at rest. An object in motion stays in motion unless an unbalanced.

Unit 2 Lesson 3 Forces Copyright © Houghton Mifflin Harcourt Publishing Company.

Motion & Forces Vocabulary

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

1.4 Forces change motion.

Forces & Motion. Motion A change in the position of an object Caused by force (a push or pull)

1 st Law Law of Inertia.  An object at rest tends to stay at rest and an object in motion tends to stay in motion with a constant velocity and unless.

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.

1 st Law of Motion Vocabulary Terms. Sir Isaac Newton ➔ Mathematician ➔ Physicist ➔ Observed the apple falling from the tree = created the theory of gravity.

Balanced and Unbalanced Forces Velocity and Acceleration

Describing and Measuring Motion Are you in motion right now? Motion: an object is in motion if the distance from another object is changing.

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.

CHAPTER 2 MOTION. PS 10 a,b The student will investigate and understand scientific principles and technological applications of force, and motion. Key.

Force and Motion Balanced and Unbalanced Forces Velocity and Acceleration.

FORCE & MOTION. I. Force Definition – a push or pull Measured in Newtons (N) – by a spring scale.

Velocity and Acceleration. Motion What is motion? –A change in the position of an object over time. How do you know something has moved? –You use a reference.

Lesson 19 All motion is due to forces acting on objects often, more than one force acts on an object at the same time When more than one force acts on.

Forces Vocab My Favorite Forces May the Force be with you Forces? No, motion! No… ??? Speed and Velocity

What are different types of forces? What factors affect the force of gravity? What happens when forces combine? How are balanced and unbalanced forces.

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.

Newton’s First Law of Motion

Balanced and Unbalanced Forces

Forces change Motion.

Chapter 13 Motion and Forces.

Balanced and Unbalanced Forces Velocity and Acceleration

Notes 2- Gravity, Friction, and Newton’s Laws

Chapter 10 Vocab Review 8th Grade.

Motion and Forces.

Motion and Forces Section 2-3.

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.

The Nature of Forces.

Newton’s First Law Pg

Connecting Motion with Force

Connecting Motion with Forces

Forces and Motion Unit Vocabulary

Motion and Forces.

Forces & Motion.

Balanced and Unbalanced Forces Velocity and Acceleration

Lesson 19 All motion is due to forces acting on objects

Chapter 2-2 Newton’s First Law.

Lesson 3 Reading Guide - Vocab

The Nature of Forces.

Chapter 2 Forces.

Presentation transcript:

Balanced and Unbalanced Forces Velocity and Acceleration Force and Motion Balanced and Unbalanced Forces Velocity and Acceleration

Motion What is motion? A change in the position of an object over time. MOTION

How do you know something has moved? You use a reference point! A stationary (not moving) object such as a tree, street sign, or a line on the road.

ALL motion is due to forces acting on objects! What causes an object to move? A FORCE! ALL motion is due to forces acting on objects!

What is a force? A push or a pull

Can more than one force act on an object at the same time? The total combination of the forces acting on an object is called NET FORCE. Can more than one force act on an object at the same time? YES! Example: Gravity is pulling your body down to Earth, the ground is supporting you with a push up force, and the wind exerts a resisting push force against your legs as you run during outside!

to Earth, the ground is supporting you Gravity is pulling your body down(1) to Earth, the ground is supporting you with a push up force(2), and the wind exerts a resisting push against force(3) against your legs as you run outside!

Balanced Forces A balanced force is one in which the net force equals ZERO. Do you think there will be any motion? NO! Examples: 50 N 50 N 25 Newtons 25 Newtons

Unbalanced Forces An unbalanced force is one in which the net force is greater than zero. Do you think there will be any motion? YES! Examples: 50 N 2 N 25 Newtons 40 Newtons

Only an _______________ force can change the motion of an object. unbalanced Example: Your dog can cause you to move if he pulls with enough force. His force is greater than the force you’re using to stay in place

What would happen if an unbalanced force acted on an object that’s already in motion? It will change the speed or direction of the object. Example: Your little brother is riding his tricycle. You run up behind him and give him a push. Your force adds to the existing force causing him to speed up.

Unbalanced forces can act in the same direction. Example: You’re pushing a cabinet across the room with a force of 15 N. You’re friend is pulling with a force of 10 N. What is the NET FORCE? What direction is the cabinet moving? 15 Newtons 10 Newtons

Unbalanced forces can act in opposite directions. Example: Two dogs are tugging on a rope. One dog pulls with a force of 20N and the other pulls with a force of 25N. What is the NET FORCE? What direction is the rope moving? When you have opposing forces, the direction the object moves is in the same direction as the larger force. 20 Newtons 25 Newtons

Mass and Inertia Newton’s 1st Law: The Law of Inertia An object at rest will remain at rest, unless acted upon by an unbalanced force

Inertia tendency of objects to resist a change in motion. Inertia is the tendency of objects to resist a change in motion. 50 mph 50 mph

Mass and Inertia An object in motion will continue moving, in the same direction, at the same speed, unless an unbalanced force acts on it.

Mass and Inertia Objects with more mass have more inertia than an object with a smaller mass.

Mass and Inertia It’s harder to make a large object move or change the speed and direction of it when it’s moving.

Mass and Inertia Which would have more inertia? Why?

Friction and Gravity What is friction? A force that opposes the motion of an object It’s a “contact” force! Occurs when an object in motion rubs against a surface. The contact reduces the speed of the object and releases heat.

What affects the amount of friction? The force of the push/pull The harder you push, the longer it’s going to take friction to stop the object. The roughness of the surface The rougher the surface, the more friction. The weight of the object The heavier the object, the more friction.

The amount of gravity depends on two things: What is gravity? The force of attraction between all objects. The amount of gravity depends on two things: The objects’ masses The distance between the two objects

Example: Throwing a ball. Since the earth is so large, everything on it is attracted to it even if they’re not touching! Example: Throwing a ball. You throw a ball up, but gravity pulls it back down to earth. You can counteract gravity by catching the ball before it hits the ground (you provide the outside force!)