Name: Period: Date:
Newton’s1stLaw?
Silentlyobservethedemonstrationsandrecordanyobservations,thoughts,orquestionsthatyoumayhaveaboutwhatyou’reseeing.
Observations Thoughts Questions
Afterdiscussingwithyourpartner,doyounoticeanypatternorsimilaritiesamongstthedemonstrations?Recordyourthoughtsbelow.
Name: Period: Date:Investigation
Inthetablebelow,describeeachobjectandrecorditsmassingrams.
ObjectDescription
ObjectMass(g)
Whichobjectdoyouthinkwilltravelthefurthestdistanceintheshortestamountoftime?Explainyourreasoning.
Prediction:
Usingtheforceapparatusateitherendoftheclassroom,applythesameamountofforcetoeachobjectasdescribedbyyourteacher.Measureandrecordthedistancetheobjecttraveledandtheamountoftimethatittookforthatobjecttotravel.Calculatethespeedofeachobjectonceyouhaverecordedyourdata.
ObjectDescription
DistanceTraveled(cm)
Time(s)
CalculatedSpeed(cm/s)
Name: Period: Date:Whatrelationshipwastherebetweenthemassoftheobjectandthespeedandordistancethattheobjecttraveled?
Whatisthisrelationshipcalledandwhatexactlydoesitstate?
Watchthevideoofthecrashtestdummyduringacollision,basedonwhatyouhavejustlearnedandtherelationshipyou’veobserved,whydoesthecrashtestdummycontinuetomoveafterthecollision?
Name: Period: Date:
How is force measured?
Beforeyoubegintoplanandbuildyourforcemeterthatwillmeasuretheforceofgravity,listthematerialsthatyouwillhaveaccesstoinordertobuildyourforcemeter.
Materials:
Writedownwhatyouknowaboutgravity:
BasedonwhatyouknowaboutgravityandhowitpullsobjectstowardsthecenteroftheEarth,howwillyoudesignyourforcemeterthatmeasuresgravity?DrawaBlueprintorplanbelow.
Name: Period: Date:
Afterbuildingyourfirstprototypeoftheforcemeter,whatdoyouneedtochangeinorderforittomatchthemodelprovidedforyou?
WhatistheequationcreatedbySirIsaacNewtonthatquantifiesforce?
Describehowwearegoingtousetheequationabovetocalculatetheforceofgravity.(Remember:Ourweightisthemeasurementofgravityandourmass)
Inthespacebelowrecordyourdataandresultsthatyouusedinordertocalibrateyourforcemeters.
Force(Youcalculatethis)
Mass(Youmeasurethisinkg)
Acceleration(Thistheaccelerationofgravity)
Name: Period: Date:
Whydosomeobjectsmoveandnotothers?Basedonwhatyouhavelearnedsofar,describewhatNewton’s1stand2ndlawsstate:
Newton’s1stLaw:
Newton’s2ndLaw:
Whatisyourhypothesisastowhyanobjectdoesnotmoveeventhoughaforceisbeingappliedtoit?
Hypothesis:
• Usingyourforcemeters,attachawoodblockandplaceitononeofthetexturedsurfaces.• Pullthewoodblockwithyourforcemeterandrecordthehighestmeasurementofforcebefore
thewoodblockstartstomoveacrossthesurface.
DescriptionofSurface/Panel# Forcemeasurementbeforeobjectmoved
Name: Period: Date:
DescriptionofSurface/Panel# Forcemeasurementbeforeobjectmoved
Basedonyourprevioushypothesisandwhatyouhavejusttested,whydoyouthinkthatthewoodblockdoesnotmovewhenyouapplyaforce?Besuretociteevidencefromyourobservations/measurements.
Drawafreebodyactingonthewoodblockfor4ofthetexturesthatyouhavetested,besuretoincludeunitsforeachoftheforcesactingontheobject.
Name: Period: Date:
Newton’s3rdLawAfterobservingthestudentsintherollingchairandrecordingyourobservations,createfoursimilarsituationsinwhichoneobjectisexerting,orapplying,aforceonanotherobject.Describeyourfoursituationsbelow.
Situation1:
Situation2:
Situation3:
Situation4:
Basedonyourknowledgeoffreebodydiagrams,balancedandunbalancedforces,andNewton’slaws,drawwhatyouthinkthefreebodydiagramswilllooklikeforeachsituation,orsystem.
Name: Period: Date:
• Pairupwithanotherstudentthathasaforcemeterandconnectthemendtoend.• Similarlytothedemonstration,onlyonepersonapplyforcetotheforcemeterwhilethe
otherholdstheotherforcemetertoprovidesomeresistance.• Recordyourobservationsbelow
WhatdoesNewton’s3rdlawstate?
BasedonwhatyousawwithyourforcemeterandNewton’s3rdlaw,recreateyourfreebodydiagramsforeachsituationwithaccuratevectors.
Name: Period: Date:
Collision Safety Research
InyourownwordsexplainwhatNewton’s3rdlawstatesandwhyitissorelevantwhendiscussinghowobjectscollide.
Asexplained,wewillbetestingtheforcesactingonaneggduringacollisionwithastationaryobject,beforewedoanytesting,drawwhatyouthinktheforcesactingontheeggwillbelikeasitis:
• Atthetopoftheramp• Atthebottomoftheramp• AtCollision
AtCollision Atbottomoftheramp Attopoftheramp
Basedontheforceyouhaveseenactingonthecaratthecollisionandwhatcanhappentotheegg,yourchallengewillbetocreateasafervehicleforyoureggsothatwhenthecollisionoccursyour“passenger”hasahigherchanceofsurvival.
Resources:
Name: Period: Date:
How Air bags work: http://auto.howstuffworks.com/car- driving-safety/safety-regulatory- devices/airbag.htm
How Seat belts work: http://auto.howstuffworks.com/car- driving- safety/safety-regulatory- devices/seatbelt.htm
How Crumple zones work: http://auto.howstuffworks.com/car- driving-safety/safety-regulatory- devices/crumple-zone.htm
What happens to passengers: http://www.rms.nsw.gov.au/geared/your _driving_skills/car_crashes/anatomy_of _a_crash.html
Three Collisions of a Car Crash: http://buckleup.mt.gov/docs/three- collisions-in-crash.pdf
Usingtheresourceprovidedtoyou,whattypesofsafetyprecautionsareyougoingtobuildintoyourcars?BesuretoexplainhowyoursafetydesignswillworkandwhyyouchosethembasedonyourknowledgeofNewton’sLaws.
Drawablueprintofyourcarwithlabelsexplainwhateachpartis/constructedof.