GPE and KE - WordPress.com · 2016. 5. 19. · greater its GPE. The larger the distance something falls through the greater the amount of GPE the object loses as it falls. As most

GPE and KE

How can we calculate energy

08012016 copy cgrahamphysicscom 2016

Starter Multiple-choice quiz


GPE LO State the GPE depends on mass and height above ground Calculate changes in GPE


bull When you lift an object up energy is transferred from your muscles in to gravitational potential energy of the object

Gravitational potential energy (GPE) is energy stored in an object because of its position in the earths gravitational field


bull Which books have GPE

bull Which book has the most GPE

bull Which book has the least GPE


bull What would happen to the GPE of book C if you moved it to the higher shelf

bull What would

happen to the GPE of book B if you moved it to the lower shelf


bull If both flower pots were to fall out the window which one is more likely to break Why


The higher up an object is the greater its GPE The larger the distance something falls through the greater the amount of GPE the object loses as it falls As most of this GPE gets changed into kinetic energy the higher up the object starts from the faster it will be falling when it hits the ground So a change in gravitational potential energy depends on the height an object moves through


To lift an apple 1m would be easier than to life the apple tree 1m Why



Well the tree has more mass Therefore it would need more GPE to reach the same height So a change in gravitational potential energy also depends on the mass of the object that is changing height


Put the pictures in order starting with the one with the most GPE


bull To move book C work must be done (We need to put a force in to move it) Work done depends on

-- how far the object is moved

-- and how much it weighs 08012016 copy cgrahamphysicscom 2016

What do you think GPE would depend on

bull The amount of gravitational potential energy an object on Earth has depends on its

bull Mass

bull Height above the ground


bull So change in GPE =

bull mass x change in height x gravitational field strength

bull What are the units


bull So change in GPE (joules)

bull mass (kg)

bull change in height (m)

bull gravitational field strength (m1199042)


bull Calculate change in GPE when a 1000kg aeroplane takes off up to a height of 500m

So change in GPE = mass x change in height x gravitational field strength




Gravitational field strength on earth= 10NKg =1000kg x 500m x 10Nkg =5000000j


Gravitational potential energy

Ep = mgh

J kg

Nkg or ms2

m


Example

A dog of mass 12 kg falls from an aeroplane at a height of 34 km How much gravitational energy does the dog have as it leaves the aeroplane

Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J

Just before the dog hits the ground what has this GPE turned

into


Kinetic energy


Where is this useful bull Many theme park rides use the transfer of

gravitational potential energy to kinetic energy and kinetic energy to gravitational potential energy


GPE increases

GPE decreases

Kinetic energy increases


Energy Transfer

bull Schiffschaukel - YouTube [720p]mp4




Plenary GPE calculations


KINETIC ENERGY Second Part Lesson 5

LO

Explain what kinetic energy of an object depends on (C)

Calculate kinetic energy (B)


Who has the most kinetic energy Rita or the cat Write down how you know

Feeling energetic


bull Kinetic energy is energy an object has due to motion It depends on two things

bull Any ideas


bull Kinetic energy tells us how much movement energy something has

bull It doesnt just depend on how fast something is moving it also depends on mass

bull If a car and a lorry are both travelling at the same speed the lorry will do much more damage if it hits something than if the car does

bull The lorry has more kinetic energy even though they are both travelling at the same speed 08012016 copy cgrahamphysicscom 2016


bull The objects mass

bull The objects speed


bull Kinetic energy = frac12 x mass x speed2

bull Units of KE= joules

bull Mass= kg

bull Speed= ms


bull A car with a mass of 500 kg is moving at a speed of 12 ms How much kinetic energy does it have



bull frac12 x 500 x (122) = 36000 J


Sometimes it is necessary to rearrange the kinetic energy equation in order to calculate the mass or the velocity of a moving object

KE = frac12mv2

What are the rearranged versions of this equation for calculating mass and velocity

m = 2KE

v2 v =

2KE m

Rearranging the KE equation


A lorry has a mass of 20000 kg If its kinetic energy is 225 mJ at what velocity is it travelling

Calculating velocity question

KE = frac12 x mass x velocity2

= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000


bull Assuming that all the gravitational potential energy of a falling object is transferred to kinetic energy

bull GPE = KE


GPE = KE

Mass x gravitational field strength x height

frac12 x Mass x speed2


GPE = KE




GPE = KE




GPE = KE

gravitational field strength x height

frac12 x speed2

G x H = frac12 V2 08012016 copy cgrahamphysicscom 2016

G x H = frac12 V2

Can be rearranged

h = v2

2g

For example how high must an object be dropped so that is reaches 30 ms (g = 10 Nkg)

height = 302

2 times 10

= 90020

= 45 m


KE mass and velocity calculations


bull An object is elastic if- it regains its shape after being stretched or squashed

Elastic potential energy is stored in the object that is being stretched or squashed What can this be transferred in to


KINETIC ENERGY 08012016 copy cgrahamphysicscom 2016

conservation of energy ndash The law that states that energy cannot

be created or destroyed just transferred into different forms

energy transfer ndash A process in which one form of energy is transferred

into another form

gravitational field strength ndash The strength of gravity in a

particular location

gravitational potential ndash The energy an object has because of its

position in a gravitational field

joule ndash The unit of energy

kinetic ndash The energy an object has because it is moving

velocity ndash A measure of the speed and direction of a moving object

Glossary


Plenary Anagrams


Multiple-choice quiz


Starter Multiple-choice quiz












bull What would



















bull Mass








bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams














bull What would



















bull Mass








bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams












bull What would



















bull Mass








bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams









bull What would



















bull Mass








bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams





bull What would



















bull Mass








bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams




















bull Mass








bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams


















bull Mass








bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams
















bull Mass








bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams














bull Mass








bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams











bull Mass








bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams









bull Mass








bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams






bull Mass








bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams









bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams





bull mass (kg)












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams












Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams









Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams





Ep = mgh

J kg

Nkg or ms2

m


Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams




Example


Woof

(help)


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams




Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg


Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams




Example

On earth g = 10 ms2

Height = 34 km = 3400 m

Mass of dog = 12 kg

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams




Example

GPE of dog = mgh = 12 x 10 x 3400 = 408 000 J


into


Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams




Kinetic energy





GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams







GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams




GPE increases

GPE decreases



Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams




Energy Transfer








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams









LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams








LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams







LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams





LO





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams





Feeling energetic



bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams





bull Any ideas












bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams














bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams










bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams






bull Mass= kg

bull Speed= ms





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams







bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams





bull frac12 x 500 x (122) = 36000 J



KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams





KE = frac12mv2


m = 2KE

v2 v =

2KE m






= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams







= 15 ms

velocity = 2KE mass

= 2 x 2250000

20000



bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams





bull GPE = KE


GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams




GPE = KE




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams




GPE = KE




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams




GPE = KE




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams




GPE = KE


frac12 x speed2


G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams




G x H = frac12 V2

Can be rearranged

h = v2

2g


height = 302

2 times 10

= 90020

= 45 m











into another form


particular location






Glossary


Plenary Anagrams













into another form


particular location






Glossary


Plenary Anagrams











into another form


particular location






Glossary


Plenary Anagrams








into another form


particular location






Glossary


Plenary Anagrams







into another form


particular location






Glossary


Plenary Anagrams




Plenary Anagrams






Documents

GPE and KE - WordPress.com · 2016. 5. 19. · greater its GPE. The larger the distance something falls through the greater the amount of GPE the object loses as it falls. As most