PHYSICS 101 EXAM 1-3 STUDY GUIDE
QUESTIONS WITH 100% CORRECT
ANSWERS
Exam mm1 mmStudy mmGuide mm- mmAnswer mmChapter mm(1-3)
A mmcar mmis mmtraveling mmat mma mmspeed mmof mm27 mmm/s.
(a) mmWhat mmis mmits mmspeed mmin mmkilometers mmper mmhour?
(b) mmIs mmit mmexceeding mmthe mm125 mmkm/h mmspeed mmlimit? mm- mmAnswer mm(a)
mm97.2 mmkm/h
27 mmm/s mmX mm3600 mms mm/ mm1000 mmkm
(b) mmNo
What mmis mmthe mmheight mmin mmmeters mmof mma mm4 mmfoot mm1.0 mminch mmtall
mmperson? mm- mmAnswer mm1.25 mmm
Inch mmto mmMeter: mm1 mmin mm= mm0.0254 mmm
Foot mmto mmInch: mm1 mmft mm= mm12 mminches
4 mmfoot mm1.0 mminch mm= mm49 mminches
49 mmin mmX mm0.0254 mmm mm= mm1.25 mmm
Mount mmEverest, mmat mm29028 mmfeet, mmis mmthe mmtallest mmmountain mmon mmearth.
mmWhat mmis mmits mmheight mmin mmkilometers? mm- mmAnswer mm8.85 mmkm
Foot mmto mmMeter: mm1 mmft mm= mm0.3048 mmm
Meter mmto mmKilometer: mm1 mmm mm= mm0.001 mmkm
29028 mmft mmX mm0.3048 mmm mmX mm0.001 mmkm mm= mm8.8477344
The mmNorth mmAmerican mmand mmEuropean mmcontinents mmare mmmoving mmapart mmat
mma mmrate mmof mmabout mm3 mmcm/y. mmAt mmthis mmrate mmhow mmlong mmwill mmit mmtake
mmthem mmto mmdrift mm360 mmkm mmfarther mmapart mmthan mmthey mmare mmat mmpresent?
mm- mmAnswer mm12000000 mmyears
,On mmMay mm26, mm1934, mma mmstreamlined, mmstainless mmsteel mmdiesel mmtrain
mmcalled mmthe mmZephyr mmset mmthe mmworld's mmnonstop mmlong-distance mmspeed
mmrecord mmfor mmtrains. mmIts mmrun mmfrom mmDenver mmto mmChicago mmtook mm13
mmhours, mm4 mmminutes, mm58 mmseconds, mmand mmwas mmwitnessed mmby mmmore
mmthan mma mmmillion mmpeople mmalong mmthe mmroute. mmThe mmtotal mmdistance
mmtraveled mmwas mm1633.8 mmkm. mm
(a) mmWhat mmwas mmits mmaverage mmspeed mmin mmkm/h?
(b) mmWhat mmwas mmits mmaverage mmspeed mmin mmm/s? mm- mmAnswer mm(a) mm124.88
mmkm/h
1633.8 mmkm mm/ mm13.08 mmh
(b) mm34.69 mmm/s
124.88 mmkm/h mmX mm1000 mmm mm/ mm3600 mms
A mmwoman mmdrives mma mmcar mmfrom mmone mmcity mmto mmanother mmwith mmdifferent
mmconstant mmspeeds mmalong mmthe mmtrip. mmShe mmdrives mmat mma mmspeed mmof
mm80.0 mmkm/h mmfor mm20.0 mmmin, mm75.0 mmkm/h mmfor mm15.0 mmmin, mmmakes mma
mmstop mmfor mm60.0 mmmin, mmthen mmcontinues mmat mm45.0 mmkm/h mmfor mm30.0 mmmin,
mmat mmwhich mmpoint mmshe mmreaches mmher mmdestination.
(a) mmWhat mmis mmthe mmtotal mmdistance mmbetween mmher mmstarting mmpoint mmand
mmdestination mm(in mmkm)?
(b) mmWhat mmis mmthe mmaverage mmspeed mmfor mmthe mmentire mmtrip mm(in mmunits mmof
mmkm/h)? mm- mmAnswer mm(a) mm67.92 mmkm
(b) mm32.6 mmkm/h
A mmcommuter mmbacks mmher mmcar mmout mmof mmher mmgarage mmwith mma mmconstant
mmacceleration mmof mm1.40 mmm/s^2.
(a) mmHow mmlong mmin mmseconds mmdoes mmit mmtake mmher mmto mmreach mma mmspeed
mmof mm1.70 mmm/s?
(b) mmIf mmshe mmthen mmbrakes mmto mma mmstop mmin mm0.8 mms, mmwhat mmis mmher
mm(constant) mmdeceleration mmin mmm/s^2? mm- mmAnswer mm(a) mm1.214 mms
Velocity/Acceleration mm= mmTime
(b) mm-2.125 mmm/s^2
Velocity/Time mm= mmAcceleration
, A mmplane mmlands mmon mma mmrunway mmwith mma mmspeed mmof mm105 mmm/s, mmmoving
mmeast, mmand mmit mmslows mmto mma mmstop mmin mm13.0 mms. mmWhat mmis mmthe
mmmagnitude mmand mmdirection mmof mmthe mmplane's mmaverage mmacceleration mmduring
mmthis mmtime mminterval? mm- mmAnswer mmMagnitude: mm8.08 mmm/s^2
Direction: mmDue mmwest
A mmbullet mmin mma mmgun mmis mmaccelerated mmfrom mmthe mmfiring mmchamber mmto
mmthe mmend mmof mmthe mmbarrel mmat mman mmaverage mmrate mmof mm7.50 mm✕ mm10^5
mmm/s^2 mmfor mm7.90 mm✕ mm10^−4 mms. mmWhat mmis mmits mmmuzzle mmvelocity mm(in
mmm/s) mm(that mmis, mmits mmfinal mmvelocity)? mm(Enter mmthe mmmagnitude.) mm-
mmAnswer mm592.5 mmm/s
(a) mmA mmlight-rail mmcommuter mmtrain mmaccelerates mmat mma mmrate mmof mm1.25
mmm/s^2. mmHow mmlong mm(in mms) mmdoes mmit mmtake mmto mmreach mmits mmtop mmspeed
mmof mm80.0 mmkm/h, mmstarting mmfrom mmrest?
(b) mmThe mmsame mmtrain mmordinarily mmdecelerates mmat mma mmrate mmof mm1.35
mmm/s^2. mmHow mmlong mm(in mms) mmdoes mmit mmtake mmto mmcome mmto mma mmstop
mmfrom mmits mmtop mmspeed?
(c) mmIn mmemergencies mmthe mmtrain mmcan mmdecelerate mmmore mmrapidly, mmcoming
mmto mmrest mmfrom mm80.0 mmkm/h mmin mm8.30 mms. mmWhat mmis mmits mmemergency
mmdeceleration mmin mmm/s^2? mm- mmAnswer mm(a) mm17.78 mms
(b) mm16.46 mms
(c) mm-2.677 mmm/s^2
In mma mmslap mmshot mma mmhockey mmplayer mmaccelerates mmthe mmpuck mmfrom mma
mmvelocity mmof mm9.00 mmm/s mmto mm60.0 mmm/s mmin mmthe mmsame mmdirection. mmIf
mmthis mmtakes mm3.33 mm✕ mm10^−2 mms, mmcalculate mmthe mmdistance mmover mmwhich
mmthe mmacceleration mmacts. mm- mmAnswer mm1.15 mmm
A mmtortoise mmsees mma mmpatch mmof mmtasty mmgrass mm25.0 mmm mmto mmthe mmnorth,
mmand mmwalks mmstraight mmtoward mmit mmat mma mmspeed mmof mm0.0753 mmms^-1.
mmAfter mmwalking mm12.5 mmm, mmthe mmtortoise mmgets mmtired, mmand mmslows mmto
mm0.0556 mmms^-1, mmwhile mmcontinuing mmto mmwalk mmstraight mmtoward mmthe mmgrass.
(i) mmHow mmlong mmdoes mmthe mmtortoise mmtake mmto mmtravel mmthe mmfirst mm12.5 mmm?
(ii) mmHow mmlong mmdoes mmthe mmtortoise mmtake mmto mmcomplete mmits mmentire mm25
mmm mmjourney?
(iii) mmCalculate mmthe mmtortoise's mmaverage mmnorthward mmvelocity mmfor mmit's mmentire
mm25 mmm mmjourney, mmin mmms^-1.
(iv) mmCalculate mmthe mmtortoise's mmaverage mmnorthward mmvelocity mmfor mmit's mmentire
mm25 mmm mmjourney, mmin mmmi/h. mm- mmAnswer mm(i) mm166 mms
QUESTIONS WITH 100% CORRECT
ANSWERS
Exam mm1 mmStudy mmGuide mm- mmAnswer mmChapter mm(1-3)
A mmcar mmis mmtraveling mmat mma mmspeed mmof mm27 mmm/s.
(a) mmWhat mmis mmits mmspeed mmin mmkilometers mmper mmhour?
(b) mmIs mmit mmexceeding mmthe mm125 mmkm/h mmspeed mmlimit? mm- mmAnswer mm(a)
mm97.2 mmkm/h
27 mmm/s mmX mm3600 mms mm/ mm1000 mmkm
(b) mmNo
What mmis mmthe mmheight mmin mmmeters mmof mma mm4 mmfoot mm1.0 mminch mmtall
mmperson? mm- mmAnswer mm1.25 mmm
Inch mmto mmMeter: mm1 mmin mm= mm0.0254 mmm
Foot mmto mmInch: mm1 mmft mm= mm12 mminches
4 mmfoot mm1.0 mminch mm= mm49 mminches
49 mmin mmX mm0.0254 mmm mm= mm1.25 mmm
Mount mmEverest, mmat mm29028 mmfeet, mmis mmthe mmtallest mmmountain mmon mmearth.
mmWhat mmis mmits mmheight mmin mmkilometers? mm- mmAnswer mm8.85 mmkm
Foot mmto mmMeter: mm1 mmft mm= mm0.3048 mmm
Meter mmto mmKilometer: mm1 mmm mm= mm0.001 mmkm
29028 mmft mmX mm0.3048 mmm mmX mm0.001 mmkm mm= mm8.8477344
The mmNorth mmAmerican mmand mmEuropean mmcontinents mmare mmmoving mmapart mmat
mma mmrate mmof mmabout mm3 mmcm/y. mmAt mmthis mmrate mmhow mmlong mmwill mmit mmtake
mmthem mmto mmdrift mm360 mmkm mmfarther mmapart mmthan mmthey mmare mmat mmpresent?
mm- mmAnswer mm12000000 mmyears
,On mmMay mm26, mm1934, mma mmstreamlined, mmstainless mmsteel mmdiesel mmtrain
mmcalled mmthe mmZephyr mmset mmthe mmworld's mmnonstop mmlong-distance mmspeed
mmrecord mmfor mmtrains. mmIts mmrun mmfrom mmDenver mmto mmChicago mmtook mm13
mmhours, mm4 mmminutes, mm58 mmseconds, mmand mmwas mmwitnessed mmby mmmore
mmthan mma mmmillion mmpeople mmalong mmthe mmroute. mmThe mmtotal mmdistance
mmtraveled mmwas mm1633.8 mmkm. mm
(a) mmWhat mmwas mmits mmaverage mmspeed mmin mmkm/h?
(b) mmWhat mmwas mmits mmaverage mmspeed mmin mmm/s? mm- mmAnswer mm(a) mm124.88
mmkm/h
1633.8 mmkm mm/ mm13.08 mmh
(b) mm34.69 mmm/s
124.88 mmkm/h mmX mm1000 mmm mm/ mm3600 mms
A mmwoman mmdrives mma mmcar mmfrom mmone mmcity mmto mmanother mmwith mmdifferent
mmconstant mmspeeds mmalong mmthe mmtrip. mmShe mmdrives mmat mma mmspeed mmof
mm80.0 mmkm/h mmfor mm20.0 mmmin, mm75.0 mmkm/h mmfor mm15.0 mmmin, mmmakes mma
mmstop mmfor mm60.0 mmmin, mmthen mmcontinues mmat mm45.0 mmkm/h mmfor mm30.0 mmmin,
mmat mmwhich mmpoint mmshe mmreaches mmher mmdestination.
(a) mmWhat mmis mmthe mmtotal mmdistance mmbetween mmher mmstarting mmpoint mmand
mmdestination mm(in mmkm)?
(b) mmWhat mmis mmthe mmaverage mmspeed mmfor mmthe mmentire mmtrip mm(in mmunits mmof
mmkm/h)? mm- mmAnswer mm(a) mm67.92 mmkm
(b) mm32.6 mmkm/h
A mmcommuter mmbacks mmher mmcar mmout mmof mmher mmgarage mmwith mma mmconstant
mmacceleration mmof mm1.40 mmm/s^2.
(a) mmHow mmlong mmin mmseconds mmdoes mmit mmtake mmher mmto mmreach mma mmspeed
mmof mm1.70 mmm/s?
(b) mmIf mmshe mmthen mmbrakes mmto mma mmstop mmin mm0.8 mms, mmwhat mmis mmher
mm(constant) mmdeceleration mmin mmm/s^2? mm- mmAnswer mm(a) mm1.214 mms
Velocity/Acceleration mm= mmTime
(b) mm-2.125 mmm/s^2
Velocity/Time mm= mmAcceleration
, A mmplane mmlands mmon mma mmrunway mmwith mma mmspeed mmof mm105 mmm/s, mmmoving
mmeast, mmand mmit mmslows mmto mma mmstop mmin mm13.0 mms. mmWhat mmis mmthe
mmmagnitude mmand mmdirection mmof mmthe mmplane's mmaverage mmacceleration mmduring
mmthis mmtime mminterval? mm- mmAnswer mmMagnitude: mm8.08 mmm/s^2
Direction: mmDue mmwest
A mmbullet mmin mma mmgun mmis mmaccelerated mmfrom mmthe mmfiring mmchamber mmto
mmthe mmend mmof mmthe mmbarrel mmat mman mmaverage mmrate mmof mm7.50 mm✕ mm10^5
mmm/s^2 mmfor mm7.90 mm✕ mm10^−4 mms. mmWhat mmis mmits mmmuzzle mmvelocity mm(in
mmm/s) mm(that mmis, mmits mmfinal mmvelocity)? mm(Enter mmthe mmmagnitude.) mm-
mmAnswer mm592.5 mmm/s
(a) mmA mmlight-rail mmcommuter mmtrain mmaccelerates mmat mma mmrate mmof mm1.25
mmm/s^2. mmHow mmlong mm(in mms) mmdoes mmit mmtake mmto mmreach mmits mmtop mmspeed
mmof mm80.0 mmkm/h, mmstarting mmfrom mmrest?
(b) mmThe mmsame mmtrain mmordinarily mmdecelerates mmat mma mmrate mmof mm1.35
mmm/s^2. mmHow mmlong mm(in mms) mmdoes mmit mmtake mmto mmcome mmto mma mmstop
mmfrom mmits mmtop mmspeed?
(c) mmIn mmemergencies mmthe mmtrain mmcan mmdecelerate mmmore mmrapidly, mmcoming
mmto mmrest mmfrom mm80.0 mmkm/h mmin mm8.30 mms. mmWhat mmis mmits mmemergency
mmdeceleration mmin mmm/s^2? mm- mmAnswer mm(a) mm17.78 mms
(b) mm16.46 mms
(c) mm-2.677 mmm/s^2
In mma mmslap mmshot mma mmhockey mmplayer mmaccelerates mmthe mmpuck mmfrom mma
mmvelocity mmof mm9.00 mmm/s mmto mm60.0 mmm/s mmin mmthe mmsame mmdirection. mmIf
mmthis mmtakes mm3.33 mm✕ mm10^−2 mms, mmcalculate mmthe mmdistance mmover mmwhich
mmthe mmacceleration mmacts. mm- mmAnswer mm1.15 mmm
A mmtortoise mmsees mma mmpatch mmof mmtasty mmgrass mm25.0 mmm mmto mmthe mmnorth,
mmand mmwalks mmstraight mmtoward mmit mmat mma mmspeed mmof mm0.0753 mmms^-1.
mmAfter mmwalking mm12.5 mmm, mmthe mmtortoise mmgets mmtired, mmand mmslows mmto
mm0.0556 mmms^-1, mmwhile mmcontinuing mmto mmwalk mmstraight mmtoward mmthe mmgrass.
(i) mmHow mmlong mmdoes mmthe mmtortoise mmtake mmto mmtravel mmthe mmfirst mm12.5 mmm?
(ii) mmHow mmlong mmdoes mmthe mmtortoise mmtake mmto mmcomplete mmits mmentire mm25
mmm mmjourney?
(iii) mmCalculate mmthe mmtortoise's mmaverage mmnorthward mmvelocity mmfor mmit's mmentire
mm25 mmm mmjourney, mmin mmms^-1.
(iv) mmCalculate mmthe mmtortoise's mmaverage mmnorthward mmvelocity mmfor mmit's mmentire
mm25 mmm mmjourney, mmin mmmi/h. mm- mmAnswer mm(i) mm166 mms
