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:

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.

Name: Period: Date: