Energy Transfer vs. Energy Energy Transfer vs. Energy TransformationTransformation

• Energy Energy TRANSFERTRANSFER is the passing of is the passing of energy from one object to another energy from one object to another object.object.

• Energy Energy TRANSFORMATIONTRANSFORMATION is the is the changing of energy from one form of changing of energy from one form of energy to another form of energy.energy to another form of energy.

WORKWORK

Mass Vs WeightMass Vs Weight

• Is weight and mass the same???Is weight and mass the same???– No, mass iNo, mass is referred to as the amount of s referred to as the amount of

matter in an object.matter in an object.

– But But WeightWeight is the is the gravitational forcegravitational force an object experiences due to its an object experiences due to its massmass..

PowerPower• Power is the rate at which energy is Power is the rate at which energy is

transferred or transformed.transferred or transformed.

• So if I am carrying a suitcase while So if I am carrying a suitcase while going upstairs which has more power…going upstairs which has more power…if I walk slowly or run up the stairs?if I walk slowly or run up the stairs?

• Power = Power = Energy TransferredEnergy Transferred

TimeTime

FrictionFriction

Elastic Potential EnergyElastic Potential Energy

Newton’s 1Newton’s 1stst Law Law

• An object at rest will remain at rest An object at rest will remain at rest unless acted on by an unbalanced unless acted on by an unbalanced force. An object in motion continues force. An object in motion continues in motion with the same speed and in in motion with the same speed and in the same direction unless acted upon the same direction unless acted upon by an unbalanced force. by an unbalanced force.

Newton’s 2Newton’s 2ndnd Law Law

• Acceleration is produced when a Acceleration is produced when a force acts on a mass. The force acts on a mass. The greater the mass (of the object greater the mass (of the object being accelerated) the greater being accelerated) the greater the amount of force needed (to the amount of force needed (to accelerate the object).accelerate the object).

Newton’s 3Newton’s 3rdrd Law Law

• For every action there is an For every action there is an equal and opposite re-action. equal and opposite re-action.

Lets see if we understand!Lets see if we understand!

• http://teachertech.rice.edu/http://teachertech.rice.edu/Participants/louviere/Newton/Participants/louviere/Newton/laws.htmllaws.html

The Law of Conservation of The Law of Conservation of EnergyEnergy

• Energy is never created or Energy is never created or destroyed!destroyed!

• The total amount of energy will The total amount of energy will always remain the same!always remain the same!

Let’s create a foldable!Let’s create a foldable!

• Take all the terms we just went over Take all the terms we just went over and put one term on each page of and put one term on each page of your foldable… then give me an your foldable… then give me an example to help you try to remember example to help you try to remember what that term means.what that term means.

• An example of Newton’s 3An example of Newton’s 3rdrd law is a law is a rocket as the gases push out of the rocket as the gases push out of the end the rocket is lifted up into space.end the rocket is lifted up into space.