The Laboratory - Physics Classroom

TheLaboratory

ProjectileSimulation

Teacher'sGuide

Topic: VectorsandProjectiles

Thefollowinginformationisprovidedtothestudent:

Question: Howcanavectordiagrambeusedtodescribethechanges(orlackofchanges)inthehorizontaland verticalcomponentsofvelocityandhowcansuchchanges(orlackofchanges)bedescribedinwords? Purpose: Touseavectordiagramtorepresentthechanges(orlackofchanges)inthehorizontalandvertical componentsofvelocityandtodescribethosechanges(orlackofchanges)overthecourseoftime. Acompletelabwrite-upincludesaTitle,aPurpose,aDatasection,aConclusionandaDiscussionof Results.TheDataSectionshouldincludetheprovideddiagramswithcomponentsofthevelocity vectorsdrawnandlabeled(vxandvy)onthediagram;thesizeofthevectorcomponentsshouldbe representativeoftheirrelativemagnitude.TheConclusionsectionshouldusewordstorespondtothe questionraisedinthePurposesection.TheDiscussionofResultsshouldincludeanswerstothe providedpost-labquestions.

URL:

MaterialsRequired: ApagefromTheShockwavePhysicsStudios:

DescriptionofProcedure: Studentslogontotheabovepageandobservetheanimationofaprojectile.On-screenbuttonsallow thestudentstoalterthelaunchangle,launchspeedandlaunchheightandtodisplaythecomponentsof aprojectile'svelocity.

AlternativeMaterialsandProcedure: AmorethoroughapproachtothislabisprovidedatTheShockwavePhysicsStudios: Thealternativeexerciseisaguidedexercisewithamuchmoreextensiveprocedure.

SafetyConcern: Thereisalwaysahigherthanusuallevelofriskassociatedwithworkinginasciencelab.Teachers shouldbeawareofthisandtakethenecessaryprecautionstoinsurethattheworkingenvironmentisas safeaspossible.Studenthorseplayandoff-taskbehaviorsshouldnotbetolerated.

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Suggestions,Precautions,Notes: 1. Studentsoftenconfuseforceandvelocity.Remindstudentsthatthevectorstheyaredrawingare velocityvectorsandnotforcevectors.Asaseparateexercise,askstudentstodrawtheforce(s) actinguponaprojectileasitmovesupwardandrightwardtowardsthepeak,atthepeakandasit movesdownwardandrightwardafterthepeakofthetrajectory.

AuxiliaryMaterials: ThefollowinggraphicisprovidedtothestudentforcompletionandinclusionintheDatasectionoftheir labnotebook. Tapethegraphic(s)belowintotheDatasectionofyourlab.

ScoringRubric:

VP7. ProjectileSimulation Included,labeledandorganizedallpartsofthelabreport. Datasectionincludesprovidedgraphic.Thevelocitycomponentsaredrawnand

labeled;therelativesizeofthevxandvyvectorswereaccuratelydrawnforboththe horizontally-launchedandtheangle-launchedprojectile. Conclusionuseswordstoclearlyandcompletelydescribedthechanges(orlackof changes)inthevxandvyvectorsforbothtypesofprojectiles. DiscussionofResultsincludesaccurateanswerstotheprovidedpost-labquestions; writingisthoroughandcomplete.

Score

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ConnectionstoThePhysicsClassroomTutorial: Thefollowingreadingsareasuitableaccompanimenttothislab:

ConnectionstoMindsonPhysicsInternetModules: Sublevels8and9oftheVectorsandProjectilesmoduleareasuitableaccompanimenttothislab:

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