Test Bank For Physics, 5th Edition All Chapters - 9781260486919.pdf

Test Bank for Physics Principles wit
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h Applications ((6))
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Chapters6:s WorksandsEnergy



10) OnsasplotsofsForcesversusspositions(Fsvs.sx),swhatsrepresentssthesworksdones bysthesforcesF?
A) thesslopesofsthescurve
B) theslengthsofsthescurve
C) thesareasundersthescurve
D) thes products ofs thes maximums forces timess thes maximums x
Answer:s C
Diff:s 1 PagesRef:sSec.s6.2


11) Thesquantitys1/2smv2sis
A) theskineticsenergysofsthesobject.
B) thespotentialsenergysofsthesobject.
C) thesworksdonesonsthesobjectsbysthesforce.
D) thespowerssuppliedstosthesobjectsbysthesforce.
Answer:s A
Diff:s 1 PagesRef:sSec.s6.3


12) Ifsthesnetsworksdonesonsansobjectsisspositive,sthensthesobject'sskineticsenergy
A) decreases.
B) remainssthessame.
C) increases.
D) isszero.
Answer:s C
Diff:s 1 PagesRef:sSec.s6.3


13) Ifsthesnetsworksdonesonsansobjectsissnegative,sthensthesobject'sskineticsenergy
A) decreases.
B) remainssthessame.
C) increases.
D) isszero.
Answer:s A
Diff:s 1 PagesRef:sSec.s6.3


14) Ifsthesnetsworksdonesonsansobjectsisszero,sthensthesobject'sskineticsenergy
A) decreases.
B) remainssthessame.
C) increases.
D) isszero.
Answer:s B
Diff:s 1 PagesRef:sSec.s6.3




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Physics:s Principless withs Applications,s Sixths Edition



15) Astrucksweighsstwicesassmuchsassascar,sandsissmovingsatstwicesthesspeedsofsthescar.s Whichsst
atementsisstruesaboutsthestruck'sskineticsenergyscomparedstosthatsofsthescar?
A) Allsthats cansbessaidsissthatsthestruckshassmoreskineticsenergy.
B) Thestruckshasstwicestheskineticsenergysofsthescar.
C) Thestruckshass4stimesstheskineticsenergysofsthescar.
D) Thestruckshass8stimesstheskineticsenergysofsthescar.
Answer:s D
Diff:s 1 PagesRef:sSec.s6.3


16) CarsJsmovesstwicesassfastsasscarsK,sandscarsJshasshalfsthesmasssofscarsK.s Theskineticsenergysofsc
arsJ,scomparedstoscarsKsis
A) thessame.
B) 2stos1.
C) 4stos1.
D) 1stos2.
Answer:s B
Diff:s 2 PagesRef:sSec.s6.3


17) Ansobjectshitssaswallsandsbouncessbackswithshalfsofsitssoriginalsspeed.s Whatsissthesratiosofsthesfi
nalskineticsenergystosthesinitialskineticsenergy?
A) 1/2
B) 1/4
C) 2
D) 4
Answer:s B
Diff:s 2 PagesRef:sSec.s6.3


18) Asbricksissmovingsatsasspeedsofs3sm/ssandsaspebblesissmovings atsasspeedsofs5sm/s.s Ifsboths obj
ectsshavesthessameskineticsenergy,swhatsissthesratiosofsthesbrick'ssmassstosthesrock'ssmass?
A) 25stos9
B) 5stos3
C) 12.5stos4.5
D) 3stos5
Answer:s A
Diff:s 2 PagesRef:sSec.s6.3




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Chapters6:s WorksandsEnergy



19) As4.0-kgsmasssissmovingswithsspeeds2.0sm/s.s As1.0-
kgsmasssissmovingswithsspeeds4.0sm/s.s Bothsobjectssencountersthessamesconstantsbrakingsforc
e,sandsaresbroughtstosrest.s Whichsobjectstravelssthesgreatersdistancesbeforesstopping?
A) thes 4.0-kgs mass
B) thes 1.0-kgs mass
C) Bothstravelsthessamesdistance.
D) cannotsbesdeterminedsfromsthesinformationsgiven
Answer:s C
Diff:s 2 PagesRef:sSec.s6.3


20) Yousslamsonsthesbrakessofsyourscarsinsaspanic,sandsskidsascertainsdistancesonsasstraight,slevels roa
d.s Ifsyoushadsbeenstravelingstwicesassfast,swhatsdistanceswouldsthescarshavesskidded,sunders thess
amesconditions?
A) Its woulds haves skiddeds 4s timess farther.
B) Its woulds haves skiddeds twices ass far.
C) Its woulds haves skiddeds 1.4s timess farther.
D) Itsissimpossiblestostellsfromsthesinformationsgiven.
Answer:s A
Diff:s 2 PagesRef:sSec.s6.3


21) AsplanetsofsconstantsmasssorbitssthesSunsinsansellipticalsorbit.s Neglectingsanysfrictionseffects,s
whatshappensstosthesplanet'sskineticsenergy?
A) Itsremainssconstant.
B) Itsincreasesscontinually.
C) Itsdecreasesscontinually.
D) ItsincreasesswhensthesplanetsapproachessthesSun,sandsdecreasesswhensitsmovessfarthers
away.
Answer:s D
Diff:s 2 PagesRef:sSec.s6.3


22) States thes work-energys principle.
Answer:s Thesnetsworksdonesonsansobjectsissequalstostheschangesinsthesobject'sskineticsenergy.
Diff:s 1 PagesRef:sSec.s6.3


23) Thesquantitysmgysis
A) theskineticsenergysofsthesobject.
B) thesgravitationals potentialsenergys ofsthes object.
C) thesworksdonesonsthesobjectsbysthesforce.
D) thespowerssuppliedstosthesobjectsbysthesforce.
Answer:s B
Diff:s 1 PagesRef:sSec.s6.4-6.5




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