Gravity Gravity is the force that pulls objects toward the center of the earth.

Slides:

Advertisements

Similar presentations

Chapter 13 Forces.

Advertisements

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

1 Motion – Newton’s Laws Gravity – A Closer Look The Universal law of Gravity.

Falling Objects and Gravity. Air Resistance When an object falls, gravity pulls it down. Air resistance works opposite of gravity and opposes the motion.

Motion Notes Speed Momentum Acceleration and Force Friction and Air Resistance Newton’s Laws of Motion.

Newton’s Laws of Motion three laws of motion: fundamental laws of mechanics describe the motion of all macroscopic objects (i.e., everyday size objects)

Chapter 10 Forces. Force and Net Force Force is a push or a pull on an object. Net force is the total force on an object.

Mrs. Wharton’s Science Class

Forces 1 Dynamics FORCEMAN. What causes things to move? Forces What is a force? A push or a pull that one body exerts on another. 2.

Chapter 2 – sections 1, 2, and 3 vocabulary 1.Force – a push or a pull exerted on an object 2.Unbalance force – a nonzero net force, which changes an object’s.

The Force of Gravity. Gravity Gravity- the force that pulls objects towards the Earth Free fall- when the only force acting on an object is gravity –

Resistance of an object to a change in its motion inertia.

Newton’s Second Law of Motion. Newton’s Second Law Newton’s Second Law of Motion- Acceleration depends on the objects mass and the net force acting on.

Laws of Motion Forces: chapter st Law An object at rest remains at rest and an object in motion maintains its velocity unless it experiences an.

MOTION & FORCES VOCABULARY MOTION The process of continual change in the physical position of an object (distance) relative to reference point ; With.

Chapters 5-6 Test Review Forces & Motion Forces  “a push or a pull”  A force can start an object in motion or change the motion of an object.  A force.

Chapter 12.  Newton ’ s first law of motion - an object at rest remains at rest and an object in motion maintains its velocity unless it experiences.

SPH3U – Unit 2 Gravitational Force Near the Earth.

Physics the study of the relationship between matter and energy

Universal Law of Gravitation All objects in the universe attract each other by the force of gravity.

Forces and Motion. Forces Affect Motion /A force is a push or a pull that changes motion. /Forces transfer energy to an object. /The force of gravity.

Force = a push or a pull Mrs. Clarici

1 Forces Laws of Motion. 2 Newton’s First Law of Motion An object at rest remains at rest and an object in motion maintains its velocity unless it experiences.

Force and Motion Jeopardy Review

Solve for the Unknown in the following diagram: A)60 m/s 2 right B)60 m/s 2 left C)10 m/s 2 left D)4 m/s 2 right.

Notes: Forces Big “G” and little “g” Newton’s Law of Universal Gravity -F g, the force of attraction between two objects is directly proportional to the.

Universal Laws of Motion “ If I have seen farther than others, it is because I have stood on the shoulders of giants.” Sir Isaac Newton (1642 – 1727) Physicist.

Forces & Motion. What is a Force? Force: push or pull Unit: Newton (N)  Kg x m/s 2 Vector: has both magnitude & direction.

Gravity Newton realized that a force acts to pull objects straight down toward the center of Earth. He called this force gravity. Gravity is the force.

Gravity Chapter Gravity Law of Universal Gravitation- all objects in the universe attract each other through gravitational force Law of Universal.

Unit 1, Chapter 3 Integrated Science. Unit One: Forces and Motion 3.1 Force, Mass and Acceleration 3.2 Weight, Gravity and Friction 3.3 Equilibrium, Action.

Law of Gravitation. Law of Gravity  Gravitational Force  All objects have mass and therefore will attract all other objects.  The size of the gravitational.

Notes: Forces Big “G” and little “g” Newton’s Law of Universal Gravity F g, the force of attraction between two objects is directly proportional to the.

Physical Science Chapter Four Acceleration Momentum Newton Gravity Free Fall Air Resistance.

FRICTION AND GRAVITY.

FORCES CH. 2. What is a Force? Def: a push or a pull –Measured in Newtons Kg · m/s 2 –Balanced Force – an equal but opposite force acting on an object.

Gravitational Force  Gravity= a force of attraction between objects, “pulls” objects toward each other  Law of universal gravitation= all objects in.

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.

Gravity and Weight Worksheet (#23)

Chapter 10 Forces.

Newton’s First Law of Motion HW

Forces Chapter 3.

Chapter 8 Forces & Motion.

Force & Acceleration Motion & Forces Newton’s Second Law Gravity

PE Definition Stored Energy Energy due to position.

The Nature of Forces.

KE and PE Practice Quiz Solutions.

Newton’s Three Laws of Motion

Forces Unit Note-Taking.

Unit 2 Force & Motion Ch 6 Sec 4 Gravity.

Force and Motion.

Key Terms to use in assessment

Physical Science Chapter 12 Section 2

The Physics of Skydiving

Force and Motion Vocabulary

By Bryan Tran and Cooper Schultz

Forces & Motion.

Kinetic and Potential Energy

Force and Motion Vocabulary

FORCES Lesson 1 Gravity.

Ch 4 Energy Kinetic Energy (KE) – the energy a moving object has because of its motion; depends on mass and speed of object KE = mv2/2 Joule – SI unit.

Presentation transcript:

Gravity Gravity is the force that pulls objects toward the center of the earth.

Gravity But…it goes beyond just that…….

Gravity Newton’s greatest discovery! The Law of Universal Gravitation. –Every mass attracts every other mass with a force that is proportional to the product of the two interacting masses –Force ~ (mass 1 x mass 2 ) / distance 2 –Force decreases with the inverse square of distance

Gravity Free fall is when the only force acting on an object is gravity. All objects in free fall accelerate at the same rate regardless of mass Demos

Gravity Fluid friction in the air is called “Air Resistance” In air, an object in free fall will continue to accelerate until the force of air resistance equals the force applied due to gravity. The greatest velocity of a free fall object in air is called “Terminal Velocity”

Gravity Weight is the measure of the force of gravity on an object. Mass is a measure of the amount of matter in that object

Gravity Weight is expressed with the equation: Newtons(N) = mass x acceleration due to gravity. 1N = 1Kg x 1 m/sec 2 9.8N = 1Kg x 9.8m/sec 2

Gravity Example: –A 100Kg person weighs…….. –(N) = mass x acceleration due to gravity –100kg x 9.8m/s 2 –So…….a 100Kg person weighs 980N on the Earth’s surface

Gravity Potential Energy is the energy an object has because of it’s position in a force field, such as a gravitational field.

Gravity Gravitational Potential Energy (GPE)= Weight x Height GPE is expressed as Newton Meters Nm.

Gravity Since we know that weight = mass x acceleration due to gravity. Logically…….. GPE = mgh (mass x Acceleration due to gravity x height) Demo..penny shot

Gravity As an object falls, it’s GPE turns into…… Kinetic Energy, the Energy of motion Kinetic Energy(KE) = 1 / 2 mass x velocity 2 KE = 1 / 2 mv 2

Not really Gravity….Oh well! Momentum is the product of a objects mass and its velocity. Momentum = Mass x velocity

Not really Gravity….Oh well! Conservation of Momentum –The total momentum of any group of objects remains the same unless outside forces act on the objects.