8/10/2019 Final Exam f4 2014

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CONFIDENTIAL

4531

Physics

April 2014

1 hour

MAKTA !ENDA" #AIN# MA!A

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FINAL E%AMINATION

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2014

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This questions paper consists of 21 printed pages.

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1 Which group contains scalar quantities only?

A. Distance, work, ass and tie

!. "peed, weight, tie, volueC. #orce, oentu, velocity, weight

D. Displaceent, area, density, energy

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$ Which o% the %ollowing is 'o+a sybol o% a base "& unit?

A. kg

!. sC. A

D. oC

' (he %ollowing are three readings, P, ) and * obtained by three di%%erent easuring instruents.

What easuring instruent was used to easure P, ) and *?

P ) *

A +ernier caliper icroeter screw gauge etre rule

! icroeter screw

gauge

+ernier caliper etre rule

C icroeter screw

gauge

etre rule +ernier calliper

D +ernier caliper etre rule etre rule

- nergy / %orce 0 distance. (he unit %or %orce is kg s$and the unit %or distance is . What is thederived unit %or energy?

A. kg s$!. kg $s$

C.

kg

$

s

$

D. kg 1s$

2 Which speed tie graph applies to an ob3ect at rest?

4 &n a siple pendulu e0perient, the length o% the pendulu and tie %or $5 oscillations arerecorded. (he length o% the pendulu is a.

A. anipulated variable

!. responding variableC. %i0ed variable

6 Diagra 1 shows a icroeter screw gauge is used in a easureent.

P / 1.12 ) / 17.8 c

* / -.$1 c

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5

-2

Diagra 1

&% the icroeter screw gauge has 9ero error o% : 5.5$ , the actual reading o% the

icroeter screw gauge isA.4.-$

!.4.--

C.4.8$ D.4.82

7 A +ernier calipers is shown in Diagra $ below.

Diagra $(he +ernier calipers is used to easure the diaeter o% a arble. (he reading produced

has to be

A. subtracted by 5.56 c

!. added with 5.56 c .C. subtracted by 5.5' c

D. added with 5.5' c .

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8 &n a ri%le shooting copetition, ;ari9 was eliinated %ro the copetition because his shots

were not accurate even though they were consistent. Which target board below shows the shots

ade by ;ari9?

15 !ased on the graph in Diagra ', the value o% gradient is $.5.

Diagra '

What is the unit %or the gradient?A. 1s1

!. s$

C. s1D. s$

A

C

!

D

v< s1

2t

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11 Diagra - shows a graph relating two physical quantities,HandK.

Diagra -

Which stateent is correct?A. His the anipulated variable

B. Kis the constant variable

C. Hdecreases linearly withK

D. His directly proportional toK

1$ Which o% the %ollowing quantities increase when an ob3ect is oving along a straight line with

uni%or acceleration?&. Distance

&&. +elocity

&&&. (ie taken

A. & and && only

!. & and &&& only

C. && and &&& only

D. &, && and &&&

1' Diagra 2 shows a velocitytie graph %or the otion o% an ob3ect.

A. (he car oves with constant acceleration and then stop.

!. (he car oves with constant velocity and then stop.

C. (he car oves with constant acceleration and then constant velocity.D. (he car oves with constant acceleration and then constant deceleration.

H

K5

Diagra 2

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1- Which graph shows an increasing acceleration?

A !

C D

12 Diagra 4 shows a part o% a ticker tape produce by a otion o% a trolley.

Diagra 4

What is the type o% otion produce by the trolley?

A. Constant velocity

!. &ncreasing velocityC. Decreasing velocity

D. =o otion

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14 (he velocitytie graph in diagra 6 below shows the oveent o% an ob3ect.

Diagra 6

Which accelerationtie graph below shows the oveent o% the ob3ect?

16 (he graph in diagra 7 below representing the otion o% a vehicle

Diagra 7

What is the acceleration and displaceent o% the vehicles?

Acceleration < s$ Displaceent <

A - 755

! 4 455C - -55

D 4 -55

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17 Which o% the %ollowing ticker tapes describes a otion o% deceleration?

18 Which o% the %ollowing will 'o+ reduce the negative e%%ect o% inertia in a car?

A. >sing the air bag syste

!. >sing bupers o% hard aterial

C. #i0ing a headrest at the seat

D. Wearing a seatbelt

$5 Diagra 8 below shows a tickertape strip o% a trolley oving down a sloping runway. (he ticker

tier lodges dots on the ticker tape at the rate o% 25 ticks per second.

Diagra 8

What is the tie taken %or the trolley to ove %ro P to )?A. 5.$5 s

!. 5.$$ sC. 1.75 s

D. $.55 s

. $.$5 s

$1 Diagra 15 below shows a displaceenttie graph %or the otion o% a toy car.

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Diagra 15

Which part o% the graph shows the toy car is stationary?

A. P

!. P)C. )*

D. *"

$$ Which o% the %ollowing stateents will not reduce the e%%ects o% inertia in a car

A. wearing a seat belt!. >sing the air bag syste

C. >sing bupers o% hard aterial

D. Antilock brake syste @A!"

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$' Diagra 11 shows an astronaut walking on the oon. What can you say about his inertia?

Diagra 11

A. &ncrease

!. DecreaseC. >nchanged

$- Which o% the %ollowing willreduce the negative e%%ect o% inertia in a car?

A. Did not use the air bag syste.!. Did not use a seatbelt

C. #i0ing a headrest at the seat

D. >sing bupers o% hard aterial

$2 BA heavy lorry is di%%icult to start oving and di%%icult to stop oving.

(his stateent is re%ers to

A. (he concept o% balanced %orce!. (he concept o% inertia

C. (he principle o% conservation o% oentuD. (he principle o% conservation o% energy.

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$4 Which ob3ect has the greatest inertia?

A !

A bicycle o% ass 12 kg An aeroplane o% ass 1.$ 0 15 2kg

C D

A car o% ass $555 kg A yacht o% ass 1.1 0 157kg

$6 (he %ollowing diagras show the %orces acting on a block. Which block e0periences the highest

net %orce?

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$7 A %orce is applied to an ob3ect. Which o% the %ollowing c''o+ occur?

A. (he ob3ect speeds up

!. (he shape o% the ob3ect changesC. (he ass o% the ob3ect decreases

D. (he ob3ect changes its direction o% otion

$8 Diagra 1$ shows three hori9ontal %orces act on a car that is oving along a straight level road.

Diagra 1$

Which cobination o% %orces would result in the car oving at constant velocity?

Air r(sis+'c( Fric+io' Forr) +hrus+

A $55 = 1555 = 755 =

755 = 1555 = $55 =

C 755 = $55 = 1555 =

D 1555 = $55 = 755 ='5 Diagra 1' shows a car is oving at 9ero acceleration.

Diagra 1'

Which relationship o% the %orces is correct?A. # # g

!. # / #g

C. # E#gD. W *

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'1 Diagra 1- shows a skateboarding playing with his skateboard with %orward %orce o% 82 =. i% the

total ass o% the boy and his skateboard is 24 kg, calculate the acceleration.

Diagram 14A. 1.48 s$!. 1.-7 s$

C. 5.14 s$

'$ Diagra 12 shows two trolleys o% the sae ass approaches each other with the sae speed.

Diagra 12

&% the collision between the trolleys is elastic, what happens to the trolleys a%ter collision?A. (he trolleys stop

!. (he trolleys ove o%% together

C. (he trolleys ove o%% separately in opposite directions

'' Diagra 14.1 shows a %rog o% ass $55 g on a lea% o% ass 25 g on the sur%ace o% a pond.

Diagra 14.$ shows the %rog leaping away %ro the lea% with a velocity o% 2 s1.

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Diagra 14.1 Diagra 14.$

What is the recoil velocity o% the lea%?A. 5.52 s1!. 5.$5 s1

C. 2.55 s1

D. $5.55 s1

'- Diagra 16 below shows trolley A and ! o% sae ass on a %rictionless plane. (rolley A oves

and collides with the stationary trolley !.

Diagra 16

Which o% the %ollowing stateents is +ru(?

A. (he collision is an elastic collision!. !oth trolleys do not undergo changes in oentu

C. (he total oentu be%ore and a%ter the collision is the sae

D. (he total kinetic energy be%ore and a%ter the collision is conserved

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'2 (able 1 below shows di%%erent planet are oving with di%%erent oentu.

(able 1

&n (able 1 above, which planet has the l(s+ oentu when itFs oving?A. arth

!. Gupiter

C. >ranus

'4 Diagra 17 below shows a etal ball is thrown vertically upwards.

Diagra 17

Which o% the %ollowing stateents is true about the oentu o% the ball be%ore it reaches thea0iu height?

A. Decrease

!. &ncreaseC. Constant

'6 Diagra 18 shows a set o% high 3up apparatus.

(hick

cushion

Kusyentebal

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Diagra18

(he thick cushion is used to reduce theA. ipulse on the body o% the athlete

!. ipulsive %orce on the body o% the athleteC. velocity 3ust be%ore landing

D. tie o% ipact between the athlete and the cushion

'7 Ali kicks a ball o% ass 1.2 kg with a %orce o% 25 = and the tie o% ipact between his boot andthe ball is 5.$ s. What is the change in oentu o% the ball?

A. 10 NsB. 15 NsC. 250 Ns

D. 375 Ns

'8 Diagra $5 shows a 125 g ball is oving at a speed o% -2 s 1when it is hit by a baseball bat.

(he ball rebounds at a speed o% 22 s 1 and its tie o% contact with the bat is 5.5- s.

Diagra $5

What is the ipulsive %orce on the ball?

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A. '6.2 =

!. 45.5 =

C. '62.5 =D. 2-5.5 =

-5 Which o% the %ollowing diagra shows produced the sallest ipulsive %orce?

A !

C D

-1 Diagra $1 shows a odel o% car.

Diagra $1

(he %ront and back parts o% a car are designed to cruple easily during a crash so that

A. the collision tie will be longer

!. the ipulsive %orce will increase

C. prevent the passengers %ro being thrown %orwards

D. the ipulsive %orce will decrease

-$ Which o% the %ollowing sa%ety %eatures in a vehicle is not designed to protect the driver duringcollisions?

A. *ein%orced passenger copartent

!. "ide bars in vehicle doorsC. "hock absorbers

D. Air bags

-' Diagra $$ shows a car with a buper %itted with shock absorbers.

Diagra $$

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(he advantage o% using the buper %itted with shock absorbers isA.(o ensure that the car will decelerate in an accident.B.(o inii9e the ipulsive %orce during an accident.C.(o ensure that the car is not sashed in an accident.D.(o ensure that the will accelerate in an accident.

-- Which o% the %ollowing situation is not a bene%it o% ipulsive %orce?

A. ;aer a nail into a wood.

!. Collision between two vehicles.

C. Push an iron post into the ground using a heavy etal pile.D. ;it a ball using a racket.

-2 Diagra $- shows a pebble and a piece o% cotton are released at the sae tie in a vacuu.

Diagra $-

Which observation is correct?

A.!oth ob3ects will %loat!.!oth the ob3ects will reach the base at the sae tie

C.(he pebble reaches the base earlier than the piece o% cotton

D.(he piece o% cotton reaches the base earlier than the pebble

cuu

vakum

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-4 Diagra $2 shows a parachutist %alling to the ground.

Diagram 25

=ae the %orce pulling the parachutist downward.

A. lectric %orce!. !uoyant %orce

C. #rictional %orce

D. Hravitational %orce

-6 Diagra $4 shows a ethod o% deterining the resultant o% two %orces by using theparallelogra o% %orces

Diagra $4

Which o% the %ollowings represents the resultant %orce?A. P

!. )

C. * D. P*

-7 What is the weight o% a helicopter which has a ass 6555 kg ?I(ake g / 8.67 s1J

*

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A. 612.6 =

!. '-$'5 =

C. 47-45 =D. 65555 =

-8 Diagra $6 shows a lap o% ass 1.2 kg is hung %ro a ceiling as shown in the diagra 4above. Calculate the tension, (, in the rope

Diagra $6

A. 4.87 =!. 6.$$ =

C. 4.$$ =

D. 6.87 =

25 Diagra $7 below shows a racing car oving on a road.

Diagra $7What is the value o% the net %orce on this car?

A. '255 =

!. $255 =

C. '$55 =D. 1255 =

v< s1

15

#rictional %orce

#$/ 255 = t