review – physics (motion) - mistercabilancom 回顾–物理（运动）- mistercabilancom 10页

CARDINALNEWMANCATHOLICSECONDARYSCHOOLName:____________________Date:_________________SNC2D10REVIEW–PHYSICS(MOTION)1.FillinthetablebelowforeachvariableVARIABLEDESCRIPTIONSCALAR/VECTORFORMULACOMMONUNITSvavv1v2DistancetaavPositionDisplacement\nCARDINALNEWMANCATHOLICSECONDARYSCHOOLName:____________________Date:_________________SNC2D10VARIABLEDESCRIPTIONSCALAR/VECTORFORMULACOMMONUNITSDisplacement(whenaccelerationisconstant)Displacement(whenfinalspeedisnotgiven)2.Foreachmeasurement,identifythenumberofsignificantdigits(a)407.0cm_____(b)75km/h_____(c)0.07cm____(d)0.7658m______(e)3.0x108km______3.Expressthefollowingvaluesinscientificnotation(a)43755=___________________(b)0.00475=____________________\nCARDINALNEWMANCATHOLICSECONDARYSCHOOLName:____________________Date:_________________SNC2D104.Listthesimilaritiesanddifferencesbetweenscalarandvectorquantities.Alsolistexamples.SCALARQUANTITYVECTORQUANTITYSIMILARITIESDIFFERENCESEXAMPLESEXAMPLES5.Drawthefollowingvectorsusingthescale1cm=10m(a)77m[W](b)23m[N](c)5m[S]6.Usingaprotractorandruler,drawthefollowingvectorswiththegivenangle.(a)38°WofN(b)57°EofS(c)27°NofW\nCARDINALNEWMANCATHOLICSECONDARYSCHOOLName:____________________Date:_________________SNC2D107.Indicatethedirectionofeachvector(ie.25°EofN,etc.)(a)(b)(c)87°62°34°SAMPLEPROBLEMS1.Christianwalkstoschoolatatotaldistanceof5.7kmandittakeshim0.72htocompletethejourney.Whatwashisaveragespeed?2.Richardtakesatripwithadistanceof45km,movingatanaveragespeedof20km/h.Howlongwashistrip?Expressyouranswerinminutes.\nCARDINALNEWMANCATHOLICSECONDARYSCHOOLName:____________________Date:_________________SNC2D103.Usingthedistance-timegraphbelow,determinetheobject’sspeed.TIME(s)DISTANCE(m)4.Mikey’smotorcyclespeedsupfromrestto9.0m/sin2.0s.Whatwashisaverageacceleration?5.Shaneacceleratesatanaverage5.2m/s2for1.75s.Whatwashischangeinspeed?6.WhenCarsonwasridingonhisscooter,hereachedafinalspeedof25.2m/safteracceleratingat2.1m/s2for21s.Whatwashisinitialspeed?\nCARDINALNEWMANCATHOLICSECONDARYSCHOOLName:____________________Date:_________________SNC2D10TIME(s)SPEED(m/s)7.Usingthespeed-timegraphbelow:(a)Calculatetheaccelerationforeachlinesegment(c)Calculatethetotaldistancetraveled8.Daviddecidestogoforawalk.Hewalks25m[E],changeshismindanddecidestowalk37m[W].Usingthe“combinedmethod”,determinehisresultantdisplacement.Assumeeasttobepositive.9.Joshjumpsonhisbicycleandtakesitforaride.Hetravels500m[N],stopsthentravelsanother100m[N].Afterwards,hetravels400m[S].Whatishisresultantdisplacement.Assumenorthtobepositive.Solvetheproblemusingthe“combinedmethod”.\nCARDINALNEWMANCATHOLICSECONDARYSCHOOLName:____________________Date:_________________SNC2D1010.Mattrunsofhishouseandheadseast.Heruns200m,stops,thenruns400m[S].Aftercatchinghisbreath,herunsanother150m[W].Usingascalediagram(1cm=50m),determinehisresultantdisplacement.11.APorschetravelsataconstantspeedandhasadisplacementof250km[E]inatimeof1.25h.Whatisthecar’svelocity?12.Irenejogs520m[E]thenturnsaroundandjogs410m[W].Ifthetotaltimeforthejogwas18minutes,whatwasheraveragevelocity?Expressyouranswerinm/s.\nCARDINALNEWMANCATHOLICSECONDARYSCHOOLName:____________________Date:_________________SNC2D10TIME(s)POSITION(m[N]ofhome)13.Usingtheposition-timegraph,determinethevelocityofeachlinesegment.\nCARDINALNEWMANCATHOLICSECONDARYSCHOOLName:____________________Date:_________________SNC2D1014.Usingthevelocity-timegraphbelow:(a)Calculatetheaccelerationofeachlinesegment(b)CalculatethedisplacementoftheobjectVelocity(m/min[N])Time(minutes)1234\nCARDINALNEWMANCATHOLICSECONDARYSCHOOLName:____________________Date:_________________SNC2D1015.Achickenrunsacrossthefarmandacceleratesconstantlyfrom7m/s[E]to17m/s[E]inatimeof10.0s.Findthedisplacementofthechickenduringthattimeinterval.Assume[E]tobepositive.16.Joejumpsonapogostickandleavesthegroundwithaninitialvelocityof3.0m/s[up]andanaccelerationof9.8m/s2[down].Joereacheshismax.heightin0.85s.WhatisJoe’sheightatthetopofthejump?Assignupaspositive.