Forces and Motion Problems Day 1

Slides:

Advertisements

Similar presentations

A golf ball will remain at rest on a tee until it is acted on by the unbalanced force of a moving club.

Advertisements

Force Diagrams and Calculations More Math!!!. Force Diagram 1 Are the forces acting on this object balanced or unbalanced? What is the net force acting.

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

Time (s)012 Mass of car & bucket (kg) Mass of falling bucket (kg) Force of falling bucket (F = m x a (earth) ) (N) Acceleration of the system ( F = m.

Newton’s Second Law of Motion The net force on an object is equal to the product of its acceleration and its mass. Force = Mass X Acceleration.

Newton’s Second Law of Motion Chapter 4, Section 3 Pg

Review F N = 20 N F G = 20 N 1.) What is the net force on the object? 2.) Are the forces balanced or unbalanced? 3.) Will the object move?

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.

Momentum and Newton’s 2 nd Law of Motion. Momentum Momentum - an object’s tendency to keep moving  Determines how difficult it is to stop the object’s.

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.

Lecture 11: Laws of motion. Newton’s 1 st Law: Inertia Matter resists motion If at rest, it will stay at rest If in motion, it will stay in motion Mass.

Powerpoint Jeopardy Forces of Motion LawsCalculatin’ FunNewton Challenge Hodgepodge

Newton’s 2 nd Law of Motion. 2 nd Law Defined The acceleration of an object depends on the mass of the object and the amount of force applied The acceleration.

Chapter 10 Forces Objects will not begin to move or change motion until an unbalanced force acts on it. Newton’s 1st Law of Motion Inertia All mass resists.

Aim: What is Newton’s 2 nd law of motion? Do Now: What is the net (resultant) force? m = 5 kg 10 N8 N Answer will be given shortly.

Newton’s 1 st Law Inertia. Force Anything capable of changing an object’s state of motion Any push or pull Causes object to speed up, slow down, or change.

Newton’s Laws of Motion I. Law of Inertia II. F=ma III. Action-Reaction.

Motion and Forces Review

Newton’s Laws of Motion

By Lora B. Taylor Law of Inertia 1 st Law 1 st Law – An object at rest will stay at rest, and an object in motion will stay in motion at constant.

NEWTON’S LAWS. Newton’s First Law An example Also called “Newton’s Law of Inertia”

NOTE: This presentation was not made for public use. Please do not use this presentation without my permission and the permission of each of the authors.

Newton’s Laws of motion. Aristotle - Science by observation. Moving objects Galileo - Science by experiment. Rate of fall Moving objects.

NEWTON’S LAWS OF MOTION I. Law of Inertia II. F=ma III. Action-Reaction.

Chapter 2 Forces Acceleration; Friction; Gravity; Momentum; Newton’s 1st, 2nd, and 3rd Laws.

Key Concepts What is Newton’s first law of motion? What is Newton’s second law of motion? Key Terms - Inertia.

Chapter 10 Forces Jeopardy Review

Newton’s 2 nd Law of Motion F = ma. Second Law of Motion This law states the net force of an object is equal to its mass times acceleration The equation.

Newton’s Second Law of Motion. 2 nd Law of Motion  The net (total) force of an object is equal to the product of its acceleration and its mass.  Force.

Chapter th Grade. Galileo Galilei –Italian Astronomer –Suggested that once an object is in motion, no force is needed to keep it moving. Force.

NEWTON’S LAWS OF MOTION I. Law of Inertia II. F=ma III. Action-Reaction.

Jeopardy Newton’s 1 st Law Newton’s 2 nd Law Newton’s 3 rd Law VocabularyFriction and More Final Jeopardy.

Inertia or Weight? Newton’s 1 st & 2 nd Laws Name that Force Newton’s 3 rd Law

Forces The Nature of Force Friction and Gravity Newton’s First and Second Laws Newton’s Third Law Rockets and Satellites Table of Contents.

FORCES & Newton’s Laws of Motion I. Law of Inertia II. F=ma III. Action-Reaction.

12.3 Newton’s Third Law of Motion and Momentum 4. A 25-N force accelerates a boy in a wheelchair at 0.5 m/s2. What is the mass of the boy and the wheelchair?

The Nature of Force and Motion 1.Force – A push or a pull – How strong it is and in what direction? 2.Net Force – The sum of all forces acting on an object.

Chapter 10 Forces. Chapter 10 Forces (10.1) The Nature of Force GOAL: To understand how force is distributed, and how forces act on one another. VOCABULARY.

Newton’s Third Law of Motion and Momentum

How to use Newton’s Second Law

Newton’s Second Law of Motion

Physics Section 4.3 Apply Newton’s 2nd and 3rd Law of Motion

newton’s laws of motion

Newton’s Laws of Motion

Chapter th Grade.

Motion & Force Newton’s 2nd Law of Motion

Newton’s Laws of Motion

Notes 2.2: Newton’s 2nd Law of Motion

Free Fall, Forces, and Newton

Object at rest stays at rest,

Newton’s 2nd Law Acceleration and Mass.

3.1 Force, Mass and Acceleration

Object at rest stays at rest,

Newton’s 2nd law Problems

Table of Contents The Nature of Force Friction and Gravity

Physical Science Chapter 12 Section 1

Objective SWBAT describe Newton’s second law of motion and use it to explain the movement of objects.

NEWTON’S 2ND LAW OF MOTION NOTES

Newton’s Second Law If all forces are in balance, object is at equilibrium and does accelerate Newton’s second law applies when forces are unbalanced;

Motion & Forces 6. Newton’s 2nd Law of Motion

Force and Motion Unit 4.

Newton’s Third Law When one object exerts a force on a 2nd object, the 2nd object exerts an equal and opposite force on the 1st object. For every action,

Newton’s 1st and 2nd Laws.

Chapter Fourteen: Force and Motion

Warm Up 12/03 Solve for mass:

Unit 2 Test Review.

Presentation transcript:

Forces and Motion Problems Day 1 1. If you have 2 people pushing a box in the same direction and the 1st person is using a force of 4 Newtons and the 2nd person is using a force of 3 Newtons, what is the total net force? 7 Newtons 2. Jack and Jill are pushing a cart toward each other. Jack uses a force of 7 Newtons while Jill uses a force of 3 Newtons. What is the net force being used? Whose direction is the force going against? 4 Newtons Against Jill 3. If James is pushing a crate using 5 Newtons and Jeff is also pushing the crate, but in James’s direction, using 5 Newtons, what is the net force being used? 0 Newtons 1 and 2 4. Which problems indicate an unbalanced force?

Force = Mass x Acceleration Forces and Motion Problems Day 2 Force = Mass x Acceleration 1. If a bird with a mass of 2 kg is accelerating at a speed of 3 m/s/s, what is the force (in Newtons) being used by the bird? 6 Newtons 2. A snow skier with a mass of 60 kg is accelerating at a speed of 7 m/s/s, what is the force being used by the skier? 420 Newtons 3. How much force is being used to accelerate a 55 kg cart at 15 m/s/s? 825 Newtons

Forces and Motion Problems Day 3 Force = Mass x Acceleration F = M x A Acceleration = Force / Mass A = F / M Mass = Force / Acceleration M = F/A 1. If a ball was accelerating at a velocity of 12 m/s/s and the force that started it was 3600 Newtons, what is the mass of that ball (in kg)? 300 kg 2. If a force of 1920 Newtons was used to accelerate you at 8 m/s/s, what (in kg) is your mass? 240 kg 3. If a 17000 kg rocket is being accelerated at 62 m/s/s, what is the force being used to accelerate it? 1054000 Newtons

How much would a person weigh on Earth if they had a mass of 28 kg? Forces and Motion Problems Day 4 Weight on Earth = Mass x 9.8 Weight can be expressed in terms of Newtons How much would a person weigh on Earth if they had a mass of 28 kg? How much would a person weigh on Earth if they had a mass of 13 kg? How much would a person weigh on Earth if they had a mass of .7 kg 274.4 Newtons 127.4 Newtons 6.86 Newtons

Momentum = Mass x Velocity Forces and Motion Problems Day 5 Momentum = Mass x Velocity What is the momentum on a 3 kg hammer if the velocity of the swing of it is 1.5 m/s? What is the momentum of a .045 kg golf ball traveling at 16 m/s? Which has more momentum, a 700 kg car traveling at 40 m/s or a 480 kg car traveling at 70 m/s? 4.5 kg-m/s .72 kg-m/s The 480 kg car

Forces and Motion Problems Day 6 1. 2 people are pushing a box in the same direction. The 1st person is using a force of 12 Newtons and the 2nd person is using a force of 7 Newtons. What is the total net force? 19 Newtons 2. Jack and Jill are pushing a cart toward each other. Jack uses a force of 8 Newtons while Jill uses a force of 8 Newtons. What is the net force being used? 0 Newtons 3. If James is pushing a crate using 28 Newtons and Jeff is also pushing the crate, but in James’s direction, using 14 Newtons, what is the net force being used? 14 Newtons 4. Which problems indicate an unbalanced force? 1 and 3

Force = Mass x Acceleration Forces and Motion Problems Day 7 Force = Mass x Acceleration 1. If a bird with a mass of 24 kg is accelerating at a speed of 3 m/s/s, what is the force (in Newtons) being used by the bird? 72 Newtons 2. A water skier with a mass of 60 kg is accelerating at a speed of 10 m/s/s, what is the force being used by the skier? 600 Newtons 3. How much force is being used to accelerate a 40 kg cart at 15 m/s/s? 600 Newtons

How much would a person weigh on Earth if they had a mass of 45 kg? Forces and Motion Problems Day 8 Weight on Earth = Mass x 9.8 Weight can be expressed in terms of Newtons How much would a person weigh on Earth if they had a mass of 45 kg? If a person weighs on Earth 813.4 N, what is their mass? How much would a person weigh on Earth if they had a mass of 17 kg 441 Newtons 83 kg 166.6 Newtons