Motion and Machines HW

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 1/20

Motion and Machines Unit Name:

Due:

Please check the diamond and then initial the line after reading the sentencebelow.

I am aware that I need to show all mathematical work in an organized mannerto receive any credit for a question that involves calculations of any kind.Omitting / leaving out the units in the problem or at the end will also result inzero credit ◊

Please explain how the picture below represents Newton’s FirstLaw of Motion. Wh should ou alwas wear a seatbelt!

 """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

Describe how the ima#es below relate to Newton’s First Law

1

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 2/20

Please draw what will happen to a car dri$in# too fast on the sharpcur$e below. !"plain with some important vocabulary.

%an ou explain how this bird demonstration wor&s!

2

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 3/20

Please label the picture with correct tpe of friction below.

Describe the Positi$es and Ne#ati$es of Friction 'elow

( )

3

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 4/20

Please make an aerodynamic vehicle in the box below. Provide some information about aerodynamics.

Please describe Newton’s *rd Law usin# the $isual below in a shortpara#raph of at least +, words.

Which of Newton’s Law’s applies here! -xplain usin# the space onthe ri#ht.

4

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 5/20

Please discuss how Newton’s +nd Law F/ma0 applies to thepicture below. 'oth $ehicles were tra$elin# at the same speed.

Please pro$ide a $isual that demonstrates each of Newton’s threeLaws1st +nd *rd

5

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 6/20

2ee if a nei#hbor understandsit3.

2ee if a nei#hbor understandsit3.

2ee if a nei#hbor understandsit3.

Please 4ll some descriptions in the trian#le below for F/ma

◊ #$O% &O'( %O() I* +* O(,+*I-! +**!( %I0$ '*I0#1

6

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 7/20

5 #o)cart with a mass of +66 &#includin# passen#ers acceleratesfrom to a speed of 16 meters persecond before crashin# into a bric&wall. F/ma)What was the force of this crash in

newtons!

5 leaf wei#hin# 2 grams falls from atree at a rate of + meters e$ersecond m7s80. What is the force ofthe leaf hittin# the #round innewtons!

on3t forget to convert4

5 car stri&es a #uardrail and the

impact was +69666 newtons.)he car wei#hed 1;66 &ilo#rams9how fast was it mo$in# in metersper second 5m/s674

5 car stri&es bric& wall and the

impact was 1,9666 newtons. he carwas tra$elin# at , m7s8.)<ow much did it wei#h in)ilograms!

Please describe potential and &inetic ener# usin# the half pipebelow.

Please describe how potential ener# can be turned into &ineticener# usin# the picture below as a $isual aid.

7

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 8/20

What’s the potential ener# of the roc&! Use the e=uation in our >ournal. 5nswer is in ?oules. #how your organized work1 P!8 4

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 9/20

%alculate the potential ener# for a *&# bas&etball droppin# from a hei#htof * meters with a $elocit of @.A m 7s8. )Find the P- in ?oules! P-/m#hand please show your work B

%alculate the potential ener# for a1, &# roc& droppin# from a hei#ht of166 meters with a $elocit of @.A m 7s8. )Find the P- in ?oules! Pleaseshow your work B

5 s&i >umper mo$in# down the hillhad a Potential -ner# of 1*66

 ?oules9 and a Cinetic -ner# of *9@66 ?oules.What is her Mechanical -ner#!Please show your work1

What is the &inetic ener# of a +6&ilo#ram cannon ball tra$elin# at 6meters per second!9Please show your work1

!

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 10/20

What force can be seen below!What is the speed of a car thatta&es two hours to dri$e A6miles!

<ow far did E dri$e if E tra$eledA+ &m7hr for hours!

P:!+#! #$O% &O'( %O()1

1"

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 11/20

Ef a car tra$elin# at a $elocit ofA6 m7s72outh accelerated to a

$elocit of 166 m7s72outh in ,seconds9 what is the carsacceleration! Please showyour work1emember9 he 2E base unit m7s8

 he same car tra$elin# 166 m7s72outh decelerates to a $elocit

of 6 m7s72outh in * seconds.What is the cars deceleration!Please show your work1emember9 he 2E base unitm7s8

11

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 12/20

What can ou tell me about the picture below! Enclude Newton’sLaws of Motion ( Potential and Cinetic -ner# and ra>ector.5pex!0

What do all machines do! Ef ou don’t &now9 then please list all ofthe possibilities. <int9 Et’s in the notes3.

12

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 13/20

Please pro$ide the name of the correct pulle in the boxes below.5lso pro$ide each pulle’s Mechanical 5d$anta#e.

M5/ M5/M5/

  urn this pa#e sidewas and construct a four pulle sstem ormore.%hat is your pulley3s echanical +dvantage4

13

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 14/20

Please pro$ide the name of the correct class of le$er in the boxesbelow Label each arrow as the eGort force9 load9 or fulcrum0.

M5/

Please label the machines below. here can be more than oneanswer per s=uare. +lso ;nd the + where information is

given on ne"t page.

14

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 15/20

Please show yourwork<O<I

Please show yourwork<O<I Please show your work

8 =.>?

<O<I

+8 + 8

15

4"cm

2 cm

1"5

Pitch =1

Diameter 3

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 16/20

Please label all of the simple machines in the pictures below. Houmust draw arrows to them as ou describe them. 5 stron# answerwill show more than 16.

16

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 17/20

2&etch out a ube Ioldber# machine that ma&es a simple tas&$er complex. Hour machine must include all of the simplemachines we ha$e learned. Please label the machines and ourdetails count.

JWheel and 5xle JWed#e JEnclined Plane JPulleJ2crew JLe$er

@opyright A BC>C (yan P. urphy

17

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 18/20

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 19/20

1* ) 5n ob>ect with at least oneslantin# side endin# in a sharp ed#e9which cuts material apart1, ) pe of machine that uses a stiGbar that rests on a support called afulcrum which lifts or mo$es loads1K ) he path of in# ob>ect: the

path that a pro>ectile ma&es throu#hspace under man based on man$ariables.1; ) he relationship between anob>ects mass m9 its acceleration a9and the applied force F is """"""""".1A ) his is the name for the ener#of motion1@ ) pes of machine that does wor&with one mo$ement.++ ) he resistance encountered

when one bod is mo$ed in contactwith another.+ ) Desi#ned or arran#ed to oGerthe least resistant to uid ow+K ) ne """"""""""" is the amount offorce re=uired to #i$e a 1)&# mass anacceleration of 1 m7s7s+; ) his is the rate of chan#e in$elocit

load@ ) he 4rst law of """""""""""""states that all ener# is either &ineticor potential16 ) P- / " " " 1+ ) ne of the foremostmathematicians and phsicists of all

time )2ir Essac """"""""""".1 ) pe of machine with a slantin#surface connectin# a lower le$el to ahi#her le$el. Enclined """"""""".1; ) his is a PU2< or a PULL9 thatcauses a chan#e in the motion orshape of an ob>ect+6 ) 5n ob>ect in motion tends to stain """""""""".+1 ) his is the abilit to dowor&9cause somethin# to mo$e9 and

#ets lost in =ualit.+* ) For e$er action there is ane=ual and opposite """"""""""""".+, ) -ner# cannot be created or """"""""""""".

Possible +nswersD5cceleration9 5erodnamic9 %ompound9 Destroed9 -ner#9 F/M59 Force9 Friction9 ?oules9Cinetic9 Le$er9 Mechanical9 m#h9 Momentum9 Motion9 Newton9 newton9 Plane9 Potential9Pulle9 eaction9 est9 2crew9 2imple9 2lidin#9 hermodnamics9 ra>ector9 Oelocit9Wed#e9 Wor&

1!

7/26/2019 Motion and Machines HW

http://slidepdf.com/reader/full/motion-and-machines-hw 20/20

2"