venuedate

EnergyMC

PracticeMr.

Fale

7.

The

diagramabovere i

jing

rr

1,Whichgraphthgy (GPE)of

object

verticallythat

0.075meterwhen

a5.0- A

senun

ase

nearthe

surfaceof

Earthandits

ethesurfaceof

Earth?

blockisisattached.

The

spring-blocksystemis

seconds,Thestudent’s

poweroutputis

ithe

A)29W

B)280

214110

W

D)14«

104W

13.Sixteen

joulesof

workwas

requiredtolift

a

2.0-kilogramobjectfromtte

floorto«table.

How

much

potentialenergywas

gainedby

the

2.0-kilogramobject?

A)

0.80joule

B)

8.0

joules

C)

16

joules

D)

32

joules

__| 14.

The

diagrambelowshowsthree

positions,4,

B,

and

C,in

the

swingofapendulum,

releasedfrienrestat

pointA.

[Neglect

cet*

10?

Newtonsisis

draggedtothe

se

The

valueof

the

spring

constantis

A)

The

kineticenergy

increasesandthe

A)38N/m

tte

On130Némnb

B)

The

kineticenergyincreasesand

the

100m

SA )

sone

apes.

gravitationalpotentialenergydecreases. boutthis

C)

The

kineticenergydecreases

andthe 60oer,

Vowna

polleyisstored

in

the

pendulum?

grsvaationalpotentialenergyremainsthe

same.

|

springasit

isstretched

0.20

metex?

A)

The

potentialenergystA

equalsthe

kinetic

D)The

kineticenergy

decreasesandthe

: energyatC.

poventialenergy

increases.

9.

Hownichworkis

doneby

the

forceliftingaB)

The

speedof

the

A

cualte

2

lighp ial

energyofthe

boxatthe0.1-kilogram

bamburger0.3

meter,

verticallyupwardspeed

ee

.

afan,

the

bladesof

thefan

tum.The

brighterthe

light

topof

the

inclineisapproximately

atconstant

velocity,fromatable?C)

The

potentialenergyatB

equalsthe

potential

aboutonthe

photocell,the

fasterthe

bladestun.

AA)

0.033

B)

0.13

Whichonergyconversion

isillustrated

by

thisy1

)6.01025

)

0.D)

The

poteatialenergyatA

equalsthe

kinetic

C)8.0%

102J

D)

1.0«1033©)

03)

D)

043

energyatB.

5 ‘

6.The

graphbelowshowsthe

relationshipbetweenthe10,As

the

powerofamachine

isincreased,

the

time

15.A55.0-kilogram

diverfalls

fromadiving

elongationofaA

iforce

appliedtotherequired

tomovean

objectafixed

distance

platformthatis

therete

tostretcl ii7

C)

light-»electrical

->mechanical

vs.

AppliedForceA)

decreases

B)

increases

wan

outaeween

D)

light>mechanical

—»chemical the

seme

and

kineticenergywith

respect10the

water's

4.

ALOokilogram

rubberball

travelingeasta14.0

meters]

E11.

Two

elevators,A

andB,

moveatconstant

surface?

persecond

hitsawall

and

bouncesback

towardthe Elevator

#

moveswith

twicethe

speedof

=

ElevatorBweighs

twiceesmuch

aselevator

4.)

PE=1620

3

andKE=03

‘westat2.0

metersparsecond.

Comparedtothe7B)

PE~1080J

andKE=5403

kineticenergyofthe

ball

beforeit

hitsthe

wall,the

Ferree

citi

kineticenergyofthe

ball

afteritbounces

offthe

wall powerneededtolift

Bis

©

is

A)

the

same

B)

twiceas

greatD)

PE=$40

5

andXE=10801

A)

one-fourthas

greatB)

one-halfas

great

C)

the

same

D)

four

timesas

great ‘What

isthe

springconstantfor

this

spring?

A)

0,020Nim

B)2.0N‘n

C)

25Nim

D)

50.

N/m

\6.

Baseyouranswertothe

followingquestionon20.The

diagrambelowshowsamoving,

5.00-kilogram

the

diagrambelow.Which

representsa2.0-kilogram

mass

placedon8track

aat

pointA

andHiga

Ee

Teesefomsetthe

gravitational

of

the

on0be

st

*

i

Asthe

pendulumswings

fom

potionA

ele

A)

4913

B)

50.0)

”

C)

250.3

D)4913A)

The

kineticenergydecrease

ismoethan

the

Asthemasstravels

alongthe

track,themaximum

heightit

will

reachabove

pointF

willbe

closestto..potential

energyincrease.

A)10.m

B)20.m

C)30.m

D)40.m.D)Thekinetic

energyincrease

is

equaltothe

17.Awound

ping

providesthe

energyto

propetoy

18.

The

graphbelow

represeatsthekinetic

energy, °

gravitationalpotentialenergy,and

total

mechanical

isenergyof

amoving

block.1Whichbestdescribes

themotion

oftheblock?

Which

sateneatber

th

4)

St

of

energythatoccursbetweenthe

¢;and

4/7B)

slidingup

frictionlessincline

itationalC)

fallingfreely

Gray

potentialenergyat

4)ta

3hatyy. tis

converted

D)

beinglifted

atconstant

velocity

B)

Elastic

potentialenergyatt:isconvertedto19.Inthe

diagrambelow,anaverageforce

of

20.

kineticenergyat4.Newtonsis

usedto

pull

backthe

stringofabow

ask

sod

kinetic

0.60meter.

attiareconvertedtointernal

energyat

D)Boi

oy

neltare1

convertedtoelastic

potentialenergyat

i

As

the

arrow,leaves

the

bow,its

kineticenergyis

A)

3.43B)

6.03C)

12)

D)

33)