The ability to do work Work = Force x distance.

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Transcript of The ability to do work Work = Force x distance.

Page 1: The ability to do work Work = Force x distance.
Page 2: The ability to do work Work = Force x distance.

The ability to do work

Work = Force x distance

Page 3: The ability to do work Work = Force x distance.
Page 4: The ability to do work Work = Force x distance.

Kinetic: energy of movement (depends onmass and velocity)

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Potential: energy of position- gravitational: depends on mass, heightand acceleration due to gravity- elastic: depends on ability to bestretched or compressed- chemical: stored in bonds- electrical: associated with charge- nuclear: stored in the atomic nucleus- electromagnetic: waves (light/rays/sound)

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Energy is never created or destroyed – it istransformed from one form to another.

(PE+KE)Beginning = (PE+KE)End

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Often, kinetic energy will be transformed intothermal energy, via FRICTION.

This is the reason we always LOSE efficiencywhen work is done!

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2

2

1mvKE

m = mass (kg)v = velocity (m/s)KE = kinetic energy (Joules)

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What is the kinetic energy of a 75-kg studentrunning at a speed of 3 m/s?

J 338)3)(75(2

1 2 KE

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mghPE

m = mass (kg)g = acceleration due to gravity (9.8 m/s2)h = height (m)PE = potential energy (Joules)

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A mover carries a television with a mass of 62 kga distance of 18 m up the stairs. How muchpotential energy does the TV have?

PE = (62)(9.8)(18) = 10,937 J

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If 2500-kg roller coaster car begins its descent from500 m above the first hill, what is its kinetic energy atthe bottom of that hill?

PE = (2500)(9.8)(500) = 12,250,000 J = KE!


Energy: Basics. Definitions Energy - the ability to do work Work - the transfer of energy by applying a force through a distance But what is a “force”?

Energy: Basics. Definitions Energy - the ability to do work Work - the transfer of energy by applying a force through a distance But what is a “force”?

Energy Systems and Muscle Fibre Types SECTION 5. Energy is defined as the ability to do work. Work is defined as the application of force through a distance.

Energy Systems and Muscle Fibre Types SECTION 5. Energy is defined as the ability to do work. Work is defined as the application of force through a distance.

Heat, Energy and Phases of Matter Energy – ability to do work Work - force x distance Two types of energy Potential Energy – stored energy ex: stretched.

Heat, Energy and Phases of Matter Energy – ability to do work Work - force x distance Two types of energy Potential Energy – stored energy ex: stretched.

Ability to do work ___________________ ___________________________

Ability to do work ___________________ ___________________________

Forms of Energy Energy – the ability to do work or cause change (work is the application of a force through a distance)

Forms of Energy Energy – the ability to do work or cause change (work is the application of a force through a distance)

Chapter 15 – Energy. Work is done when a force moves an object through a distance Energy – The ability to do work In other words, energy is transferred.

Chapter 15 – Energy. Work is done when a force moves an object through a distance Energy – The ability to do work In other words, energy is transferred.

Thermochemistry Thermodynamics. Energy: Ability to do work or produce heat. Work=force x distance force causes the object to move Gravitational force.

Thermochemistry Thermodynamics. Energy: Ability to do work or produce heat. Work=force x distance force causes the object to move Gravitational force.

Energy The ability to do work or make change. The ability to do work or make change.

Energy The ability to do work or make change. The ability to do work or make change.

Potential and Kinetic Energy Energy: is the ability to do work Work is being done whenever some physical force is being used to move an object some distance.

Potential and Kinetic Energy Energy: is the ability to do work Work is being done whenever some physical force is being used to move an object some distance.

Chapter 15 - Energy. 15.1 Energy and Its Forms Energy is the ability to do work. Work is the transfer of energy Work = force x distance.

Chapter 15 - Energy. 15.1 Energy and Its Forms Energy is the ability to do work. Work is the transfer of energy Work = force x distance.

Energy: ability to do work

Energy: ability to do work

From Work Ability Index and Model to concrete Actions · Background in Finnish Institute of Occupational Health:30 years research in Work Ability and Ageing, development of Work Ability

From Work Ability Index and Model to concrete Actions · Background in Finnish Institute of Occupational Health:30 years research in Work Ability and Ageing, development of Work Ability

Energy and Its Forms 15.1 pg 446-452. Energy and Work Energy is the ability to do work – Energy is transferred by a force moving an object through a distance.

Energy and Its Forms 15.1 pg 446-452. Energy and Work Energy is the ability to do work – Energy is transferred by a force moving an object through a distance.

Energy. Work is done when a force moves an object through a distance. The ability to do work or cause change is called energy Energy is measured in joules.

Energy. Work is done when a force moves an object through a distance. The ability to do work or cause change is called energy Energy is measured in joules.

Work – the product of force and the distance traveled The unit of Work is a Joule (J) Work= Force × distance W = F ● d Distance (m) Force (N) Work.

Work – the product of force and the distance traveled The unit of Work is a Joule (J) Work= Force × distance W = F ● d Distance (m) Force (N) Work.

ENERGY EXAM REVIEW. Energy Defined as the ability to do work – Work is force acting across a distance – Power is the rate at which work is done – Food.

ENERGY EXAM REVIEW. Energy Defined as the ability to do work – Work is force acting across a distance – Power is the rate at which work is done – Food.

Helsinki 2008 Dimensions of Work Ability · Dimensions of Work Ability Helsinki 2008 Results of the Health 2000 Survey Work ability is an essential prerequisite for well-being and

Helsinki 2008 Dimensions of Work Ability · Dimensions of Work Ability Helsinki 2008 Results of the Health 2000 Survey Work ability is an essential prerequisite for well-being and

What is Energy? Definition: Energy is the ability to do work. Work is done when a force moves an object over a given distance.

What is Energy? Definition: Energy is the ability to do work. Work is done when a force moves an object over a given distance.

SIGHT DISTANCE Spring 2015. Stopping Sight Distance Sight Distance Decision Sight Distance Passing Sight Distance Note: A driver’s ability to see ahead.

SIGHT DISTANCE Spring 2015. Stopping Sight Distance Sight Distance Decision Sight Distance Passing Sight Distance Note: A driver’s ability to see ahead.

Unit 2: Elements, Compounds and Mixtures. 2.1 Energy Energy- The capacity to do work or the ability to produce heat. Work- force applied over a distance.

Unit 2: Elements, Compounds and Mixtures. 2.1 Energy Energy- The capacity to do work or the ability to produce heat. Work- force applied over a distance.