Do Now: True or False? Justify!

Slides:

Advertisements

Similar presentations

Aim: What are Newtons 1 st and 3 rd Laws of Motion? Do Now: What is the weight of the box? m = 20 kg F g = mg F g = (20 kg)(9.8 m/s 2 ) F g = 196 N.

Advertisements

Forces and Newton’s 3 Laws of Motion Robert Strawn Compiled 10/16/11.

Forces & Motion Unit Vocabulary

FORCES. Force is a vector quantity and is measured in newtons (1N) There are different type of forces: – weight – friction force – normal reaction force.

Physics Chapter 6 Forces. Newton’s Laws of Motion 1 st Law (Law of inertia) –An object moving at constant velocity keeps moving at that velocity unless.

Newton’s 2 nd Law. Force on Object Objects acted on by a net unbalanced force will accelerate in the direction of the force This means they will speed.

Newton’s Laws of Motion 1. If the sum of all external forces on an object is zero, then its speed and direction will not change. Inertia 2. If a nonzero.

Force A push or pull exerted on an object..

Forces in 1 Dimension Chapter Force and Motion Force is push or pull exerted on object Forces change motion –Makes it important to know the forces.

Lecture Newton’s first Law If there are no external forces, the object does not change its velocity and direction. LAW of INERTIA!!!

FORCE. A FORCE IS A PUSH OR A PULL. IF FORCES ARE POWERFUL ENOUGH, THEY MAY RESULT IN MOTION.  What is a force?

MOTION & FORCES CH d. motion: an object’s change in position relative to a reference point What is motion? How do you know the balloon moved?

OTHER LAWS. I. NEWTON’S 1 st LAW Also called the law of Inertia. Inertia is not a force It is a property of matter It is the tendency of an object to.

100 Newton's 1 st Law Newton's 2 nd Law Newton's 3 rd Law Terms & Units

 Force: A push or a pull Describes why objects move Defined by Sir Isaac Newton.

Basic Information: Force: A push or pull on an object Forces can cause an object to: Speed up Slow down Change direction Basically, Forces can cause an.

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.

Force and Motion The only reason an object changes it velocity is because a force acts on the object. Remember a change in velocity can be either a change.

How can we describe how objects move?. The law of BALANCED FORCES  Objects at rest tend to stay at rest.  Objects in motion tend to stay in motion.

Chapter 4 Laws of Motion and Forces Goals: Newtons Laws, Inertia and mass, Mass vs Weight, Free Body diagrams, Fg, Fn, Fy, Fx, Ff, coefficients of friction.

Forces and Newton’s Laws Houston, We Have a Problem! Lesson.

Forces and the laws of motion. Force A bat strikes the ball with a force that causes the ball to stop and then move in the opposite direction.

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

Describing Motion Newton’s Laws.

Forces and Newton’s 3 Laws

Balanced and Unbalanced Forces

Forces change Motion.

Chapter 4 Objectives: 1) Define FORCE; including units.

Newton’s Laws of Motion

Force and Motion Review

11.8 Forces Review.

Motion & Forces.

NEWTON’S LAWS.

Force and the Law of Motion

Forces Third Law First Law and Equilibrium Second Law and Acceleration.

Force and Motion Energy.

Force and Motion.

Chapter 4 Laws of Motion.

Sign in Handouts Phones up

Newton’s Laws Of Motion

Newton’s Laws of Motion

Newton’s Laws of Motion Chapters 2,3,6,7

Describing Force and Motion

Chapter 3 Forces & Newton’s Laws

Chapter 12 Forces and Motion

Connecting Motion with Forces

Forces and Newton’s Laws

Forces and Motion Unit Vocabulary

Force and Motion Review

Motion, Forces, and Energy

Force and Motion Review

Forces and Newton’s Laws of Motion

Newton’s Laws of Motion

Motion and Forces.

Use these to prepare your ½ sheet of notes for the test!

Describing Motion Newton’s Laws.

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.

Force A push or pull exerted on an object..

Describing Motion Newton’s Laws.

Describing Motion Newton’s Laws.

Describing Motion Newton’s Laws.

Newton’s 3rd Law and Free Body Diagrams

Test: Friday January 12th

Describing Motion Newton’s Laws.

Describing Motion Newton’s Laws.

Describing Motion Newton’s Laws.

Presentation transcript:

Do Now: True or False? Justify! If the net force on a body is zero, then its velocity will not change. An unbalanced force on a body will always impact the objects speed. The reason why initially moving objects tend to come to rest in our “everyday” life is because they are being acted on by unbalanced forces. An unbalanced force on an object will always change the objects direction. True False (Skater on ice grabs a rope and swings in circles. This is true for velocity only. True (Friction) False (I can apply an unbalanced force in the direction it is moving and simply accelerate it in the same direction.)

Aim: How can we apply Newton’s Third Law? Homework:

What happened when The shuttle count down got to zero? Why? Using this information, how can you describe Newton’s Third Law?

Review – Newton’s 1st and 2nd Law Newton's First Law - Inertia - An object at rest will stay at rest until a force acts on it. An object in motion will stay in motion until a force acts on it. Newton's Second Law - The amount of force and mass an object has will determine its acceleration.

How can we describe Newton’s Third Law of Motion? Forces come in pairs (twos) Every force has an equal and opposite force Every action has an equal and opposite reaction 3rd Law Force pairs happen on separate objects!!!

Examples of Newton’s Third Law 1. 2. Rocket Boat Person Thrust

Force A push or pull on an object Changes the STATE OF MOTION of an object CONTACT FORCE Physical interaction between objects FIELD FORCE “Action over a distance” Example: Gravity (Weight)

Types of Forces- Free Body Diagram Normal Force A reaction force that is always PERPENDICULAR to the surface Tension Force in a string that PULLS an object Friction A retarding force that OPPOSES MOTION Weight Pull from gravity ALWAYS STRAIGHT DOWNWARD Draw a

Newton’s Law Activity 1. Using a Balloon, straw string and tape. Design an experiment where a balloon rocket is fired at the wall. 2. Calculate the force that the balloon hits the wall with. 3. How does every law apply??? 4. Draw the free-body diagram