lesson 01 to 36 review

8/10/2019 Lesson 01 to 36 Review

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Physics 30 Lessons 1 to 36 Review

Kinematics

1. A car travels 150.0 km in 3.0 h. What is its average speed? (50 km/h)

2. A runner with a speed ! 5.5 m/s cvers a distance ! "5.0 m during a practice race. #w

lng des she take? (15 s)

3. A vehicle travels 1.5 $ 102m in %.5 s& then 2.0 $ 102m in a !urther 5.0 s. What is the

vehicle's speed during each part ! the urne? What is its average speed?(20 m/s& *0 m/s& 2" m/s)

*. An electrn accelerates in a straight line !rm *.0 $ 10+m/s t +.5 $ 10+m/s in 1.* $ 10,2s.

What is its acceleratin? (1." $ 10"m/s2)

5. A -us was seen t mve with a velcit ! 15.0 km/h nrth. 3.0 minutes later it wasmving with a velcit ! 10.0 km/h suth. What was its average acceleratin?(".3 km/h/min suth))

+. A et car starting at ".0 m/s accelerates uni!rml at *.0 m/s2!r %.5 s. ind the cars !inalspeed and the distance it cvers. (3" m/s& 1.% $ 102m)

%. A apanese -ullet train is -served t mve thrugh 1.5 $ 102m in 5.0 s as it accelerates at

".0 m/s2. ind the trains initial and !inal speeds. (10 m/s& 50 m/s)

". A car accelerated !rm rest at a rate ! 2.5 m/s2. #w lng will it take t reach a speed !

15.0 m/s? (+.0 s)

. ind the acceleratin ! a crate riginall at rest& i! it cvers 3* m in %.2 s. (1.3 m/s2)

10. A mtrccle initiall travelling at 15.0 m/s cmes t rest in 5.0 s. What is its deceleratin

and hw !ar des it travel during deceleratin? (,3.0 m/s2& 3" m)

11. A plane taking !! n the runwa ! an airprt accelerates at 3.5 m/s2!rm rest !r %.5 s.

etermine

i. the planes speed a!ter %.5 s. (2+ m/s)

ii. its average speed. (13 m/s)

iii. the distance it travelled in %.5 s. (" m)

12. 4! a -$ takes 15.0 s t !all !rm a cli!! tp t the grund -elw& hw tall is the cli!!? (1.1 $103m)

13. 4! a -all is drpped !rm rest& !ind its speed a!ter 1+.0 s. (15% m/s)

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1*. #w lng wuld a -rick take t !all !rm a height ! %" m n the mn where the

gravitatinal acceleratin is 1.% m/s2? (.+ s)

15. A - threw a metal -all straight dwn !rm an apartment -lck windw with an initial

speed ! 1*.0 m/s. What was its speed ust -e!re it struck the grund *.2 s later? (55 m/s)

1+. An arrw is !ired up int the air with an initial speed ! 5.0 m/s.

i. #w lng des it take t reach ma$imum height? (.+" s)

ii. #w high des it rise? (*+0 m)iii. #w lng des it take t return t the grund? (1.* s)

1%. 4! a prectile is !ired verticall int the air and attains a ma$imum height ! 1.0 $ 103m&

what is its speed ! prectin? #w lng will it take t rise? (1*0 m/s& 1*.2 s)

Kinematicsgraphing

1. ketch a displacement6time graph shwinga) cnstant psitive velcit.

-) 7er velcit.c) cnstant negative velcit.

d) cnstant psitive acceleratin !rm rest.

e) cnstant negative acceleratin !rm rest.!) the mtin ! an -ect thrwn upwards with a high initial velcit t the time where

the -ect cmes -ack t the grund.

2. ketch the velcit6time graph shwinga) cnstant psitive velcit.

-) cnstant negative velcit.

c) cnstant psitive acceleratin !rm rest.d) cnstant negative acceleratin !rm rest.

e) the mtin descri-ed in part !) ! 8uestin 1. What is the slpe ! this graph n

9arth?

3. What phsical 8uantit is represented -

a) the slpe ! a psitin,time graph?

-) the slpe ! a velcit,time graph?c) the area under a velcit,time graph?

d) the area under an acceleratin,time graph?

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Projectiles

1. A prectile is !ired hri7ntall !rm the tp ! a cli!! with an initial speed ! 3.0 $ 102m/sand strikes the grund -elw a!ter .* s. #w high is the cli!!? What is the prectiles

range? (*.3$102m& 2."$103m)

2. anta :laus entered the ;rth ; then *0.0 km >9. What was the cars !inal displacement

!rm its starting psitin? (50.0 km at 53.0@ east ! nrth)

3. A mtr ccle was ridden 30. 0 km >W and then *0.0 km >. 4t was then driven +0.0 km

>9l. ind its resultant displacement. (50.0 km at 53@ suth ! east)

*. A rwer intends t rw his ra!t at its tp speed ! 1.5 m/s !rm the suth -ank ! a river t

a pint directl ppsite n the nrth -ank. #e !ails t recgnise the river current which

pulls a g west at 0.50 m/s& What is the ra!ts resultant velcit with respect t the -ank?(1.+ m/s at 1"@ west ! nrth)

5. A 0.50 km wide east,west river has a water current ! 1.2 m/s. A small -at leaves the

nrth -ank with an intended velcit ! 1." m/s >.4. What is the velcit ! the -at relative t the river? (1." m/s suth)

44. What is the -ats velcit relative t the -ank? (2.2 m/s at 3*@ west ! suth)

444. #w lng will the -at take t crss the river? (2." $ 102s)4. #w !ar dwnstream !rm its intended arrival pint will it tuch the ppsite -ank?

(3.3 $ 102m)

+. A pilt intended t !l his plane with a velcit ! *.0 $ 102km/h >; relative t the

grund. #e was unaware ! the strng easterl wind that -lew with a grund speed ! 1.0 $

102km/h. What is the planes velcit relative t the grund. (*.1 $ 102km/h at 1*@ west

! nrth)

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%. =hree !rces act at a single pint. =w ! the !rces are 3 ; uthwest and *5 ; nrth.

What is the value ! the third !rce that creates e8uili-rium? (%.33;)

Newton's laws o motion

1. An -ect is acted upn - an applied !rce ! 10.0 ; against a !rictinal !rce ! 2.0 ;.:alculate the net !rce n it. (".0 ;)

2. A scu-a diver pushes hersel! thrugh the water with a net !rce ! 1.0 ;. 4! her applied!rce is 2+.0 ;& !ind the !rictinal !rce ! the water n her. (%.00 ;)

3. 4! the ce!!icient ! !rictin ! a hri7ntal sur!ace is 0.30 and an -ect ! mass *. kg

mves n it at a stead speed. What is the !rictinal !rce n it? (1* ;)

*. 4! there is a resistive !rce ! 15.0 ; n an -ect when a 25.0 ; !rce is applied. ind the

net !rce n the -ect. (10.0 ;)

5. :alculate the acceleratin ! a 3. kg skate-ard acted n - a net !rce ! *.0 ;.

(1.0 m/s2)

+. What is the acceleratin ! a 3.2 $ 102kg -lck su-ect t an un-alanced !rce ! * ;?

(0.2 m/s2)

%. What is the un-alanced !rce re8uired t cause an acceleratin ! ".2 m/s2in a sack !

!lur ! mass 5.1 kg? (*2 ;)

". A crate ! mass 25.0 kg is mved alng a level !lr - an applied !rce ! 1.5 $ 102;

against a !rictinal !rce ! 50.0 ;. etermine the acceleratin ! the crate. (*.0 m/s2)

. 4! a trlle ! mass 5.00 kg is accelerated at 3.50 m/s2against a !rictinal !rce ! 10.0 ;&

determine the applied !rce. (2%.5 ;)

10. A -us ! mass *.5 $ 10*kg is su-ected t a !rce ! 3.* $ 10*; and accelerates at a rate !

0.+% m/s2. :alculate the resistive !rce n the -us. (3. $ 10 3;)

11. A -all is seen t accelerate !rm 2.5 m/s t +.0 m/s in 1.1 s. 4! its mass is 0.+0 kg& !ind theaverage net !rce n it. (1. ;)

12. A t truck ! mass 0.25 kg is pushed !rm rest - a !rce ! 5.0 ; against a !rictinal!rce ! 3.0 ; !r a distance ! 3.0 m. What is the !inal speed ! the truck? #w lng des

the mtin take? (*" m/s& 0."% s)

13. =w wden -lcks A and B have respective masses ! 3.0 kg and *.0 kg and are

cnnected with an ine$tensi-le crd. 4! the -lcks are placed n a hri7ntal !rictinless

sur!ace and a !rce ! ".0 ; is applied t A& !ind the tensin in the cnnecting crd. (*.+ ;)

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1*. A plane ! mass +.0 $ 1 05kg travelling at 1.5 $ 102 m/s is accelerated t 2.0 $ 102m/s in

10.0 s. 4! there is air resistance n the plane e8ual t 1.0 $ 10+;& determine

i. the acceleratin ! the plane (5.0 m/s2)ii. the net !rce n the plane (3.0 $ 10+;)

iii. the applied !rce n the plane (*.0 $ 10+;)

15. A man ! mass +0.0 kg stands in an elevatr. ind the !rce ! the elevatr n his !eet when

i. it mves upward at a stead 2.0 m/s (5. $ 102;)

ii. it mves dwnwards at a cnstant rate ! 1.5 m/s (5. $ 102;)iii. it mves upwards with a uni!rm acceleratin ! 2.0 m/s2. (%.1 $ 102;)

iv. it mves dwnwards with a cnstant acceleratin ! 2.0 m/s2(*.% $ 102;)

1+. ;ewtns ecnd Caw ! Dtin can -e stated in the e8uatin E ma. =his law is ne !three ver imprtant laws ! mtin. #is !irst law& which was knwn t Falile& dealt with

-ects that mve with uni!rm mtin.

i. What is uni!rm mtin?

ii. What is the acceleratin ! a -d mving with uni!rm mtin?iii. What is the net !rce n a -d mving with uni!rm mtin?

iv. What d u think ;ewtn said a-ut the !rces n a -d that mves withuni!rm mtin?

v. tate hw ;ewtn phrased his irst Caw ! Dtin.

1%. =w hrses are pulling a -arge alng a canal. 9ach hrse e$erts a !rce ! 1.2 $ 103; at

30@ t the !rward directin ! mtin -ut n ppsite sides ! the canal. 4! the -arge glides

in the water at a stead speed& !ind the water resistance n the -arge. (2.1 $ 103;)

1". An apple rests n a ta-le and its weight is de!ined as the actin !rce. What is the reactin

!rce?

!irc"lar motion an# $ravitation

1 . What is the e8uatin !r the speed ! an -ect mving arund a circle ! radius (r) and

taking time (=)?

2. e!ine perid and !re8uenc !r uni!rm circular mtin.

3. 4! an -ect mves at a cnstant speed in a circle& it is still accelerating. Wh?

*. What is the directin ! the velcit vectr in uni!rm circular mtin?

5. What is the directin ! the acceleratin (and !rce) vectrs in uni!rm circular mtin?

+. A car travels arund " curved path that ha " radius ! 15 m at a cnstant speed ! 22 m/s.

What is the centripetal acceleratin ! the car? (2.5 m/s2)

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%. An amusement park ride has " radius ! 2.5 m. 4! the time ! ne revlutin ! a rider is

0.%5 s& what is the speed ! the rider? (21 m/s)

". :alculate the (a) speed and (-) acceleratin ! a pint n the circum!erence ! a 33 1/3

phngraph recrd (Gemem-er thse?


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c. 4! u were placed n a line -etween 9arth and enus& at what pint measured !rm

9arth wuld u e$perience e8ual gravitatinal !rce !rm each planet?

(2.1+ $ 1010m)

1. 4! u weigh "0 ; n 9arth& what is the gravitatinal pull at a distance ! 1320 km

ABL9 =#9 KGA:9 ! the 9arth? (55.+ ;)

20. 4! u weigh ++% .5 ; n 9arth& what will u weigh n a planet that has 5 times the mass

! 9arth -ut nl twice the diameter ! the 9arth? ("3* ;)

21. What is the gravitatinal !ield strength n the sur!ace ! the mn i! the radius ! the mn

is 1.%+* $ 10+m and the mass ! the mn is %.3* $ 1022kg? (1.+2 ;/kg)

22. What is the gravitatinal !ield strength 1.2% $ 10%m a-ve the sur!ace ! the 9arth?

(1.0 ;/kg)

23. Ln the sur!ace ! planet J an -ect has a weight ! +3.5 ; and a mass ! 22.5 kg. What isthe gravitatinal !ield strength n the sur!ace ! planet J? (2."2 ;/kg)

2*. At what distance a-ve the 9arths sur!ace is the gravitatinal !ield strength e8ual t

%.33 ;/kg? (1.01 $ 10+m)

25. What is the speed ! an arti!icial satellite ! mass +25 kg which is placed in an r-it

1.00 $ 10+m a-ve the sur!ace ! a planet with a mass ! 3.1" $ 1023kg and a radius ! 2.*3

$ 10+m? (2.* $ 103m/s)

2+. An arti!icial satellite with a mass ! 5%2 kg 4s placed int a circular r-it arund the 9arth

which has a mass ! 5." $ 102*kg. 4! the radius ! the r-it 4s 1.2 $ 10%m hw lng will it

take t make ne revlutin? (1.3 $ 10*s)

2%. What is meant - the term ge,snchrnus?

%&( )aves( *n# Light

1. What is meant - the perid and !re8uenc ! an -ect that is vi-rating?

2. e!ine simple harmnic mtin.

3. What is meant - the e8uili-rium psitin?

*. What is the di!!erence -etween displacement and amplitude?

5. What is #kes Caw?

+. 4! a pendulum has a perid ! 2.%5 minutes& what is its !re8uenc? (0.00+ #7)

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%. What is the perid ! a pendulum that has a 1ength ! 3.%5 m n 9arth? (3."" s)

". What is the length ! a pendulum that will swing "0 times in tw minutes n 9arth?(0.5+ m)

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2+. raw and la-el a re!ractin diagram !r a wave slwing dwn.

2%. raw and la-el a re!ractin diagram !r a wave underging ttal 4nternal re!lectin.

2". What are the tw main theries regarding the nature ! light?

2. A pin hle camera that is 1+.0 an lng prduces a %.5 cm tall image ! a 5.+ m tall -ect.

What is the distance ! the pinhle camera t the -ect? (11. m)

30. A 3 cm card is placed 25 cm in !rnt ! a light surce. 4! a 30 cm shadw is generated n

the wall -ehind the card& hw !ar is the card !rm the wall? (225 cm)

31. Fala$ JJ is lcated +.5 $ 10 22 km !rm 9arth. #w man light,ears awa is thega1a$? (+."% -illin light ears)

32. 4! the rtating mirrr in Dichelsns mirrr e$periment rtates at "3.3 #7& hw !ar awa

must the !i$ed mirrr -e lcated in rder t give a success!ul e$periment? (225 km)

33. 4! the !i$ed mirrr in an eight,sided Dichelsns mirrr e$periment is placed +5 km awa!rm the rtating mirrr& what is the !re8uenc !r the rtating mirrr in rder t give a

success!ul e$periment? (2"" #7)

3*. What is the cmplete nells Caw !rmula?

35. When des ttal internal re!lectin ! light ccur?

3+. What is the inde$ ! re!ractin !r a li8uid in which the speed ! light is 1."5 $ 1 0"m/s?

(1.+2)

3%. A ra ! light strikes glass (nE1.5) with an incident angle ! 50@. What is the re!racted

angle in the glass? (31@)

3". A prism -ends the light such that an incident angle ! 5*@ in air -ecmes a re!racted angle

! 30in the glass. What is the speed ! light in the glass? (1."5 $ 10"m/s)

3. A su-stance has a critical angle ! 3!r light travelling !rm it int air. What is the inde$

! re!ractin !r the su-stance? (1.5)

*0. Cight travels !rm diamnd int air. 4! the angle ! incidence is 30@& what is the angle !re!ractin? (=4G)

*1. What is


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*3. What e$periment prvided de!initive evidence that light is a wave?

**. Dnchrmatic light strikes a di!!ractin grating ! 0.25 mm spacing. =he light passesthrugh the grating t prduce an inter!erence pattern n a screen 3 m awa. 4! 50 -right

lines are prduced ver a 30 cm space

a) what is the wavelength ! the light? (500 nm)-) what is the !re8uenc ! the light? (+ $ 101*#7)

*5. Ged light ! wavelength +** nm strikes a du-le slit apparatus with a separatin !1.0 mm. 4! the -right -ands have a 0.5* mm width& what is the distance !rm the du-le silt

apparatus t the screen? (0.+* m)

*+. Freen light ! 530 nm strikes a du-le silt apparatus with a separatin ! 1.5 mm. 4! thescreen is lcated 2.5 m -ehind the du-le slit apparatus& hw man -right lines per 20 cm

culd -e generated n the screen? (22+)

*%. #w man lines per metre des a di!!ractin grating have ! the 2nd rder image ccurs atan angle ! 1+when light ! 530 nm wavelength is used? (3.*% $ 105)

*". Dnchrmatic light with a !re8uenc ! 5.50 $ 101* #7 is directed nt a di!!ractin

grating ruled with +000 lines/m. What is the distance -etween the third -right line and the

!i!th dark line ! the inter!erence pattern !rmed n a screen 2.50 m !rm the grating?(0.0123 m)

*. A + cm -ect is lcated 25 cm in !rnt ! a diverging mirrr with a radius ! curvature

e8ual t *0 cm. What is the si7e ! the image? ( P 2.+% cm )

50. A 30 cm -ect is lcated 1+ cm in !rnt ! a cnverging mirrr with a !cal length ! 12cm. What is the si7e ! the image? ( ,0 cm )

51. A 12 cm -ect lcated in !rnt ! a curved mirrr generates an erect image 3+ cm tall

lcated +0 cm !rm the mirrra. What is the radius ! curvature !r the mirrr? ( +0 cm )

-. What is the tpe ! mirrr? ( cncave& cnverging )

52. An -ect lcated in !rnt ! a diverging mirrr with a radius ! curvature e8ual t 20 cmgenerates an erect image that is 1/5 the si7e ! the -ect. What is the -ect distance? (*0

cm)

53. A * cm tall -ect is lcated 10 cm in !rnt ! a cncave lens with a !cal length ! 5 cm.

What is the si7e ! the image prduced? ( 1.33 cm )

5*. A 3 cm tall -ect is lcated 15 cm in !rnt ! a cnve$ lens with a !cal length ! 5 cm.

What is the si7e ! the image prduced? ( ,1.5 cm )

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55. A + cm -ect lcated 15 cm in !rnt ! an ptical device generates an image 2 cm tall

which lcated n the same side as the -ect.

a. What is the !cal length ! the device? ( ,%.5 cm )-. What is the tpe ! device? ( cncave lens )

5+. A lens with a !cal length ! * cm generates an inverted image which is 5 times as large asthe -ect. What is the image distance? ( 2* cm )

5%. A lens with a !cal length ! 15 cm generates an erect image that is 1/* the si7e ! the-ect. What is the image distance? ( ,11.25 cm )

!onservation Laws +Lessons 3, to 36-

1. Write the cnservatin ! energ e8uatin !r the !llwing. u-stitute the apprpriate

e8uatins.

a) a car ! mass m and initial speed v1rlling t the -ttm ! a hill ! height h&

neglecting !rictin.-) a charge 8 with mass m with initial speed v mving thrugh an accelerating vltage

c) a phtn ! wavelength hitting a statinar electrn& scattering the phtn at and

giving the electrn speed v.

d) !r the phtelectric e!!ect.e) !r $,ra prductin.

!) !r phtn emissin - atms.

2. When wrk is dne - a net !rce& what tpe ! energ is changed?

3. When wrk is dne - a !rce such as !rictin& what tpe ! energ is changed?

*. A sail-at is mving with a cnstant velcit. (a) 4s wrk -eing dne - the net !rceacting n the -at? 9$plain. (-) Gecgni7ing that the wind prpels the -at !rward and thewater resists the -ats mtin& what des ur answer in part (a) impl a-ut the wrk

dne - the winds !rce cmpared t the wrk dne - the waters resistive !rce?

5. B measuring the speed ! a -at at ne mment and cmparing it t the speed at anther

mment& ne can tell whether a net !rce has dne wrk n the -at. =his statement ispssi-le -ecause ! the wrk,energ therem. uppse the tw speeds are measured t -e

e$actl the same& and the -at mves hri7ntall. 4s it sa!e t cnclude that n !rce has

acted n the -at? 9$plain& making sure t distinguish -etween the phrases On !rceO andOn net !rce.O

+. A persn pulls a t-ggan !r a distance ! 35.0 m alng the snw with a rpe directed25.0@ a-ve the snw. =he tensin in the rpe is *.0 ;. (a) #w much wrk is dne n the

t-ggan - the tensin !rce? (-) #w much wrk is dne i! the same tensin is directedparallel t the snw? (2." k& 3.2 k)

%. When spring arrives& a wman packs her winter clthes in a -$ and li!ts it at a cnstant

velcit t the tp shel! ! her clset& a distance ! 1." m a-ve the !lr. =he clthes

weigh 150 ;. #w much wrk des she d in li!ting the clthes? (0.2% k)

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". A 0.0%5 kg arrw is !ired hri7ntall. =he -w string e$erts an average !rce ! +5 ; n

the arrw ver a distance ! 0.0 m. With what speed des the arrw leave the -w? (3

m/s)

. A %5.0 kg skier rides a 2"30 m lng li!t t the tp ! a muntain. =he li!t makes an angle !

1*.+@ with the hri7ntal. What is the change in the skiers gravitatinal ptential energ?

(0.525 D)

10. A ple,vaulter appraches the take,!! pint at a speed ! .0 m/s. Assuming that nl hisspeed determines the height t which he can rise& !ind the ma$imum height at which the

vaulter can clear the -ar. (*.1 m)

11. A persn is sled,riding dwn a hill that is *.+ m high. tarting at the tp with a speed ! 3.1

m/s& the sled reaches the -ttm with a speed ! %.+ m/s. (a) etermine whethermechanical energ has -een cnserved. (-) Wh might mechanical energ nt -e

cnserved?

12. A wman runs with a speed ! 5.* m/s !! a plat!rm that is 10.0 m a-ve the water. 4gnre

air resistance. #w !ast is she mving when she hits the water? (15 m/s)

13. A cclist appraches the -ttm ! a gradual hill at a speed ! 11.0 m/s. =he hill is 5.0 mhigh& and the cclist estimates that she is ging !ast enugh t cast up and ver it withut

peddling. 4gnring air resistance and !rictin& !ind the speed at which the cclist crests the

hill. (*." m/s)

1*. A -asket-all plaer makes a ump sht. =he 0.+0 kg -all is released at a height ! 2.0 ma-ve the !lr with a speed ! %.2 m/s. =he -all ges thrugh the hp 3.0 m a-ve the

!lr at a speed ! *.2 m/s. #w much wrk is dne - air resistance? (,*.* )

15. A 3.00 $ 102kg pian is -eing li!ted at a stead speed !rm grund level straight up t an

apartment 10.0 m a-ve the grund. =he crane that is ding the li!ting prduces a stead

pwer ! *.00 $ 10

2

W. #w much time des it take t li!t the pian? (%3.+ s)

"ltiple !hoice Review ."estions

1. Quantities in phsics are generall divided int

A. magnitude and scalar 8uantities.B. dnamic and scalar 8uantities.

:. vectr and scalar 8uantities.

. kinematic and scalar 8uantities.

2. A vectr is a 8uantit that

A. is at rest.

B. has a magnitude& a unit& and a directin.

:. e$plains wh -ects are in mtin.. has nl a magnitude and a unit.

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3. A planes velcit relative t the grund is !und - adding the planes velcit relative t

the air and

A. the velcit ! the plane relative t the grund.

B. the velcit ! the air relative t the plane.:. the velcit ! the air relative t the grund.

. the velcit ! the grund relative t the plane.

*. A -all is -eing swung in a hri7ntal circle in the clckwise directin. Which ! the

!llwing can -e said a-ut the velocity ! the -all?

A. =he velcit ! the -all is increasing alng the circular path.

B. =he velcit ! the -all is decreasing alng the circular path.

:. =he velcit ! the -all is tangent t the circular path.

. =he velcit ! the -all is perpendicular t the circular path.5. What is the directin ! acceleratin ! an -ect mving in a circular path?

A. 4t is tangent t the circular path.

B. 4t is tward the center ! the circle.

:. 4t is awa !rm the center ! the circle.. 4t is e8ual t the arc length !r small angles.

+. What des it mean !r a -d t -e in !ree !all?

A. An -d !alling under the in!luence ! gravit alne.

B. An -d !alling thrugh water.:. An -d under the in!luence ! -th hri7ntal and vertical !rces.

. =he !all ! a sk diver a!ter his parachute pens .

%. What is the directin ! the acceleratin due t gravit?

A. Ln& the cean !lr it is dwn while n muntain tps it is up.B. 4t is alwas upward& awa !rm the 9arth.

:. 4t is alwas dwnward tward the centre ! the 9arth.

. Acceleratin due t gravit is a scalar 8uantit and has n directin.

". Which ne ! the !llwing statements is the de!initin ! amplitude !r a pendulum?

A. =he length ! string !rm the tp t the center ! mass.

B. =he amunt ! mass at the end ! the string.

:. =he time re8uired !r ne cmplete ccle.

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. =he ma$imum sidewas displacement ! the mass !rm its rest psitin.

. What is a !rce?

A. 4t is a push r a pull.B. 4t speeds thing up& slws them dwn& and sends them arund crners and up hills.

:. 4ts is an agent that -ects use t interact with ne anther.

. All ! the a-ve.

10. Which ! the !llwing is true regarding gravitatinal !ield strength n 9arth?

A. 4t is the same everwhere.

B. 4t is greater n muntain tps.

:. 4t is weaker in valles.

. 4t varies with distance !rm the 9arths center.11. Wh was the !irst scientist t see the cnnectin -etween !alling -ects& prectiles& and

satellites in r-it?

A. Aristtle

B. Falile:. ;ewtn

. 9instein

12. #w des the gravitatinal !rce -etween tw -wling -alls change as the distance

-etween their centers is !irst reduced t ne hal! and then increased t three times the

riginal distance?

A. 4t !irst -ecmes !ur times as great and then ne,ninth as great.

B. 4t !irst -ecmes ne,!urth as great and then ne,ninth as great.:. 4t !irst -ecmes !ur times as great and then ne,third as great.

. 4t !irst -ecmes twice as great and then three times as great.

13. What is inertia?

A. =he amunt ! matter in an -ect.B. =he !rce ! gravit n an -ect.

:. =he amunt ! !rce acting n each kilgram ! mass.

. =he tendenc ! an -ect t resist changes in its state ! mtin.

1*. Which ! the !llwing is a statement ! ;ewtns irst Caw ! Dtin?

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A. 4! n un-alanced !rce acts n an -ect& the -ect accelerates in the directin ! the

single greatest !rce acting n the -ect.

B. 4! n net !rce acts n an -ect& the -ect maintains its state ! mtin.:. Acceleratin varies directl with the un-alanced !rce.

. r ever actin !rce& there e$ists a reactive !rce that is e8ual in magnitude -ut

ppsite in directin.

15. Which ! the !llwing is a statement ! ;ewtns ecnd Caw ! Dtin?

A. 4! an un-alanced !rce acts n an -ect& the -ect accelerates in the directin ! the

!rce.

B. 4! n net !rce acts n an -ect& the -ect maintains its state ! mtin.:. r ever actin !rce& there e$ists a reactive !rce that is e8ual in magnitude -ut

ppsite in directin.

. When n e$ternal& un-alanced !rce acts n an -ect& its velcit remains cnstant.

1+. Which ! the !llwing is a statement ! ;ewtns =hird Caw ! Dtin?

A. When n e$ternal& un-alanced !rce acts n an -ect& its velcit remains cnstant.

B. r ever actin !rce& there e$ists a reactive !rce that is e8ual in magnitude -ut

ppsite in directin.:. 4! n net !rce acts n an -ect& the -ect maintains its state ! mtin.

. 4! an un-alanced !rce acts n an -ect& the -ect accelerates in the directin ! the

!rce.

1%. #w is the acceleratin ! an -ect related t the mass and the net !rce?

A. Acceleratin varies directl with -th the un-alanced !rce and the mass.

B. Acceleratin varies inversel with -th the un-alanced !rce and the mass.

:. Acceleratin varies directl with the un-alanced !rce and inversel with the mass.. Acceleratin varies inversel with the un-alanced !rce and directl with the mass.

1". A trans!er ! energ in the !rm ! a peridic distur-ance thrugh a medium is called a

A. wave.

B. perid.:. wavelength.

. watt.

1. Lne cmplete vi-ratin ! a vi-rating -ect is called a

A. series.

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B. circuit.

:. ccle.

. re!ractin.

20. =he time re8uired !r ne cmplete scillatin ! a vi-rating -ect is called

A. the !re8uenc.

B. the peridic rate.:. the perid.

. ne #ert7.

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21. =w -ects vi-rate in simple& ne,dimensinal mtin at the same !re8uenc and in

di!!erent directins at the same time. =hese -ects are said t -e RRRRRRR with each ther.

A. in phase

B. ut ! phase

:. ut ! !re8uenc. ut ! velcit

22. =w pendulums ! the same length are released !rm the same relative psitins at the

same time. Lne wuld e$pect them t scillate RRRRRRRRRRRR with each ther.

A. in !re8uencB. in perid

:. in phase

. ut ! phase

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2+. When using wave ras t descri-e wave re!lectin& the angle ! incidence and the angle !

re!lectin& are measured !rm

A. an imaginar line perpendicular t the re!lecting sur!ace.

B. the nrma1 t a re!lecting -ect.

:. an angle determined - the !re8uenc ! the wave.. Bth A and B are crrect.

2%. Which ! the !llwing is true regarding a -illiard -all and a !eather drpped !rm the

same height near the sur!ace ! the 9arth.

A. =he -illiard -a1l and the !eather will -th reach terminal velcit and hit the grundat the same mment.

B. =he will accelerate and hit the grund at the same mment.

:. =he -illiard -all will hit the grund !irst.

. =he !eather will cling t the -illiard -all and slw it dwn.

2". Which ! the !llwing is true regarding a -illiard -all and a !eather drpped !rm the

same height near the sur!ace ! the mn. Gecall that the mn des nt have an

atmsphere.

A. =he -illiard -a1l and the !eather will -th reach terminal ve1cit and hit the grund

at the same mment.

B. =he will accelerate and hit the grund at the same mment.:. =he -illiard -all will hit the grund !irst.

. =he !eather will cling t the -illiard -all and slw it dwn.

2. #w man images will -e !rmed - an -ect p1aced -etween tw parallel mirrrs?

A. tw

B. !ur

:. si$teen

. an in!inite num-er

30. =he image !rmed in a plane mirrr is

A. the same si7e as the -ect& erect& and virtual.

B. the same si7e as the -ect& erect& and real.:. smaller than the -ect& erect& and virtual.

. smaller than the -ect& inverted& and virtua1.

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31. A 5.0 cm high -ect is placed

25.0 cm !rm a pint surce !

light. A 3+.0 cm high shadwappears n a screen. What is the

distance& d& !rm the -ect t the

screen?

A. %.20 cm

B. 32.2 cm:. 155 cm

. 1"0 cm

32. A light ra re!lects !rm tw mirrrs in a department stre.

=he measure ! angle W is

A. 100@

B. 120@

:. 130@. 1*0@

33. =he idea that light is a transverse wave is supprted - evidence that light

A. can -e plarised.

B. -ends tward the nrmal when slwing dwn.:. -ends awa !rm the nrmal when speeding up.

. waves will inter!ere with each ther when passing thrugh tw narrw slits.

1

5.00 cm

-ect

3+.0 cm

shadw

25.0 cm d

W

20

+0


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3*. A plarising !ilter is set s that the light passing thrugh it has DAJ4DKD -rightness.

#w !ar must the !ilter -e rtated s the light passing thrugh it will -e ! D4;4DKD

-rightness?

A. 3+0

B. 1"0

:. 135

. 0

35. =he speed ! light in a medium that has an inde$ ! re!ractin ! 1.20 is

A. 2.%" $ 10"m/sB. 2.50 $ 10"m/s

:. *.00 $ 10%m/s

. 3.+0 $ 10%m/s

3+. Cight travelling !rm ne medium int anther has an angle ! incidence ! 30.0@ and anangle ! re!ractin ! +".5. 4! the inde$ ! re!ractin ! the !irst medium is 1."+& then the

inde$ ! re!ractin ! the secnd medium wuld -e

A. 1."1

B. 1.30

:. 1.03

. 1.00

3%. A can,clred !ilter will nl pass green and -lue lightS a ellw !ilter will nl pass red&ellw and green light. 4! a can and a ellw !ilter are placed in !rnt ! a white light

surce and the result is prected nt a mvie screen& then the clr n the screen is

A. reddish,-lue.

B. white.

:. -lack.

. green.

3". A -eam ! mnchrmatic light passes thrugh tw slits& prducing an inter!erence pattern.4! the slit separatin is halved& the distance -etween adacent !ringes will -e

A. halved.B. 8uadrupled.

:. du-led.

. unchanged.

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3. Dnchrmatic light passes thrugh tw narrw slits that are 2.0 $ 10,+m apart and is

prected n a screen 1.0 m awa. 4! the light prduces a !irst,rder -right !ringe 2.0 $ 10,1

m !rm the center ! the inter!erence pattern& the wavelength ! the light is

A. *.0 $ 10,"

mB. *.0 $ 10,%m

:. *.0 $ 10,5m

. *.0 $ 10,*m

*0. Cight ging !rm air t glass at an angle ! *5@ t the nrmal will

A. decrease its speed and wavelength.

B. decrease its wavelength and !re8uenc.

:. increase its !re8uenc and maintain its speed.

. increase its wavelength and maintain its !re8uenc.

*1. 4n a du-le,slit e$periment& light passes thrugh tw slits that are 0.020 cm apart. =w

cnsecutive dark !ringes are !rmed 0.+0 cm apart when a screen is placed 3.0 m !rm the

slits. =he wavelength ! the light is

A. 1.0 $ 10,%m

B. 2.0 $ 10,%m

:. *.0 $ 10,%m. ".0 $ 10,%m

*2. 4t was thught that an ether was necessar t e$plain

A. the :mptn e!!ect.B. the high speed ! light.

:. the transverse nature ! light waves.

. hw light waves culd travel thrugh the vacuum ! space.

*3. GTmer gathered data t measure the speed ! light - -serving

A. lantern !lashes n distant hills.

B. the mvement ! upiters mns.

:. light radiated - the sun.. light re!lected !rm an ctagnal mirrr.

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"ltiple choice answers

1. : 11. : 21. A 31. :2. B 12. A 22. : 32. :

3. : 13. 23. A 33. A

*. : 1*. B 2*. 3*. 5. B 15. A 25. A 35. B

+. A 1+. B 2+. 3+.

%. : 1%. : 2%. : 3%. ". 1". A 2". B 3". :

. 1. : 2. 3. B

10. 20. : 30. A *0. A

*1. :*2.

*3. B

lesson 01 to 36 review

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