FSC Physics MCQs Chapter 3 Class 11

Created on February 07, 2022

Physics Ch 3 Class 11 Forces and Motion

1 / 137

A paratrooper is falling down with uniform velocity and also rotating with a constant angular velocity of 0.2 rad/sec. The body satisfies ______.

NTS 2019
Physics
Forces and Motion
Elimination Tool:

A) The first condition of equilibrium but not second

B) Second condition of equilibrium but not first

C) The first and second conditions of equilibrium

D) Neither the first nor the second condition of equilibrium

2 / 137

For projectile motion, in the absence of air resistance:

UHS 2019
Physics
Motion in Two Dimensions
Elimination Tool:

A) Horizontal acceleration is zero

B) Vertical acceleration is zero

C) Horizontal force is constant

D) Vertical speed is constant

3 / 137

A body with constant speed can still be accelerating. This statement Is:

True

False

Depends on the frame of reference

None of these

4 / 137

A car is traveling with uniform acceleration along a straight road. The road has marker posts every 100 m. When the car passes one post, it has a speed of 10 m/s and when it passes the next one, its speed is 20 m/s. What is the car’s acceleration?

NTS 2017
Physics
Motion in Two Dimensions
Elimination Tool:

A) 0.67 m/s2

B) 1.5 m/s2

C) 2.5 m/s2

D) 6.0 m/s2

5 / 137

Laws of motion describes?

Relationship of body, force and motion In response

Relationship of body and force

Relationship of force and motion

Relationship of body and motion in response

6 / 137

A body has mass 1 kg on earth. Its mass on moon will be

0.6 kg

0.4 kg

0.8 kg

1

7 / 137

Which of the following types of force can do no work on the body on which it operates?

NTS 2016 SMBBMC
Physics
Forces and Motion
Elimination Tool:

A) Centripetal force

B) Frictional force

C) Gravitational force

D) Shearing force

8 / 137

Dimensions of linear Momentum are:

MLT^-1

ML^2T^2

M^2LT^1

MLT^-2

9 / 137

A block with a mass of 0.1 kg is attached to a spring and placed on a horizontal frictionless table. The spring is stretched 20 cm when a force of 5 N is applied, the spring constant is:

NTS 2011
Physics
Forces and Motion
Elimination Tool:

A) 50 Nm-1

B) 25 Nm-1

C) 75 Nm-1

D) 100 Nm-1

10 / 137

An object is thrown vertically upward with a velocity of 20 m/s. How much time it will take to reach the highest point?

NUMS 2017
Physics
Motion in Two Dimensions
Elimination Tool:

A) 2 sec

B) 4 sec

C) 1 sec

D) Insufficient information

11 / 137

An object with constant mass rests on a horizontal surface whose coefficient of friction is 0.2. If a horizontal force F is applied to the object, what will be the effect(s) on the object?

I. It may move with constant speed in the direction of F once it has been set in motion.

II. It may remain at rest.

III. It may accelerate.

IV. It may move with constant speed in a direction opposite

NTS 2017
Physics
Forces and Motion
Elimination Tool:

A) I, II and III only

B) I and III only

C) II and IV only

D) IV only

12 / 137

Formula of maximum range of projectile is?

2vi/g

vi^2/g

vig

None

13 / 137

A body of mass m = 3.513 kg is moving along the x axis with a speed of 5.00 ms^-1 of the magnitude of Its momentum Is recorded as

14.57 kg m/s

17.6 kg m/s

18.565 kg m/s

13.56 kg m/s

14 / 137

A neutron collides with a stationary proton at rest. After collision

Proton moves with velocity double to that of neutron

Neutron comes to rest and proton moves with same velocity as that of neutron

Proton moves with double velocity in opposite direction

None of these

15 / 137

A bomb is dropped from an airplane moving horizontally with a speed of 200 km/h. If the air resistance is negligible, the bomb will reach the ground in 5 s, the altitude of the plane approximately is: (g = 9.8 m/s2)

NTS 2016 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

A) 50 m

B) 75 m

C) 122.5 m

D) 250 m

16 / 137

A Lead ball and a feather are dropped in vacuum both at the same time. Which of the following will be true:

The feather will move at fast rate than the ball

The feather will move with flow rate than the ball

Both will move with the same rate

None of these

17 / 137

if the velocity of a body is reducing, the negative acceleration Is called:

Deceleration

Retardation

Both a and b

None of these

18 / 137

Consider an object placed on a frictionless inclined plane at a height of 5m , if it is released, what will be its velocity at the bottom of the inclined plane?

NUMS 2017
Physics
Forces and Motion
Elimination Tool:

A) Insufficient information

B) 10 m/s

C) 100 m/s

D) 20 m/s

19 / 137

A cyclist is moving towards the right with an acceleration of 4m/sec2. At t=0, he has traveled 5m moving towards the right at 15 m/sec. What will be his position at t = 2 seconds?

NTS 2018
Physics
Forces and Motion
Elimination Tool:

A) 36

B) 38

C) 41

D) 43

20 / 137

An object is dropped from the top of the building. If it takes 10 seconds to hit the ground, what is the height of the building?

NTS 2015 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

A) 390 m

B) 490 m

C) 590 m

D) 690 m

21 / 137

car travels a distance of 350 miles in 5.0 hours find its average speed.

10 miles/hr

70 miles/hr

50 miles/hr

60 miles/hr

22 / 137

The product of force and time is equal to:

NUMS 2020
Physics
Forces and Motion
Elimination Tool:

A) Angular momentum

B) Force

C) Change in momentum

D) Velocity

23 / 137

Projectile must be launched at which angle with the horizontal to attain maximum range?

NTS 2011
Physics
Motion in Two Dimensions
Elimination Tool:

A) 90 degrees

B) 45 degrees

C) 75 degrees

D) 105 degrees

24 / 137

A bullet of mass 20g leaves the gun with a velocity of 200 m/s. If the mass of gun is 2kg then the speed of recoil of the gun is:

NUMS 2019 Cancelled
Physics
Forces and Motion
Elimination Tool:

A) 2000 m/s

B) 2 m/s

C) 20 m/s

D) 200 m/s

25 / 137

A car starts from rest and moves with a constant acceleration. During the 5th second of its motion, it covers a distance of 36 meters. What is the acceleration of the car?

NTS 2011
Physics
Motion in Two Dimensions
Elimination Tool:

A) 12.5 m/s2

B) 8 m/s2

C) 15 m/s2

D) 16 m/s2

26 / 137

If a car collides with a housefly, what will be the magnitude of the force experienced by the housefly?

NTS 2018
Physics
Forces and Motion
Elimination Tool:

A) Much greater than the force experienced by the car

B) Much lesser than than the force experienced by the car

C) Same as the force experienced by the car

D) 10 times less than the force experienced by the car

27 / 137

A shot leaves a gun at the rate of 160m/s. Calculate the greatest distance to which it could be projected and the height to which it would rise: (g=10 m/s2)

NTS 2010
Physics
Motion in Two Dimensions
Elimination Tool:

A) 1560m, 540m

B) 2560m, 640m

C) 3560m, 740m

D) 4560m, 840m

28 / 137

A body of mass 0.5 kg starts from rest (t=0) & experiences a force F. 8i + 6j. What will be its
velocity at t=1 if A covers a distance of 4m?

13

20

17

25

29 / 137

In an inelastic collision, Momentum is _____ and Kinetic Energy is ______ respectively.

NUMS 2019 Reconduct
Physics
Forces and Motion
Elimination Tool:

A) Not conserved ; not conserved

B) conserved ; not conserved

C) Conserved ; conserved

D) Not conserved ; conserved

30 / 137

When the speed of body is doubled is momentum becomes

Halfed

Doubled

Tripled

Remains same

31 / 137

Newton’s first law Is applicable on:

I) Body In motion II) Body In rest

I only

II only

Neither a nor b

Both a and b

32 / 137

Consider the following examples of motion:

I. The daily motion of the earth about its own axis

II. The motion of planets around the sun

III. Sugar cane crushing machine is run by a camel that moves in a circular path around the machine.

IV. Rotation of flywheel about its axle.

Which of the following Is correct?

NTS 2015 DUHS and JSMU
Physics
Forces and Motion
Elimination Tool:

B) I and II are examples of orbital motion.

C) II and IV are examples of spin motion,

D) III and IV are examples of orbital motion,

E) I and IV are examples of spin motion and II and III are examples of orbital motion

33 / 137

A person has to cover a distance of 6 km in 45 minutes. If he covers one-half of the distance in two-thirds of the total time; to cover the remaining distance in the remaining time his speed (in km/hr) must be:

6

8

12

15

34 / 137

A man throws a ball vertically upward in the compartment of an accelerated train. The ball will fall:

NUMS 2014
Physics
Motion in Two Dimensions
Elimination Tool:

A) ln front of him

B) In his hand

C) Behind him

D) Beside him

35 / 137

Assume that you have two balls of Identical volume, one weighing 2 Newtons and the other 10 Newtons. Both are falling freely after being released from the same point simultaneously. Which of the following will then be true:

I. The 10 N ball falling freely from rest will be accelerated at a greater rate than the 2 N ball

II. At the end of the 4s of freefall, the 10 N ball will have 5 times the momentum of the 2 N ball

III. At the end of the 4s of free fall, the 10 N ball will have the same kinetic energy as the 2 N ball

IV. The 10 N ball possesses greater inertia than the 2 N ball

NTS 2010
Physics
Forces and Motion
Elimination Tool:

A) I, Il and Ill only

B) I and II only

C) II and IV only

D) IV only

36 / 137

If a car is moving with constant non-zero velocity, then its displacement time graph will be:

a

b

c

d

37 / 137

A body starts sliding on a rough horizontal surface with a speed of 10 m/s. If the coefficient of friction is 0.2, find the distance traveled by the body before coming to rest. (g = 10m/s)

NTS 2010
Physics
Forces and Motion
Elimination Tool:

A) 15 m

B) 25 m

C) 35 m

D) 40 m

38 / 137

If a face acts on a body for 2 sec and its rate of change of momentum is 50, the force acting on the body is:

100

50

25

None

39 / 137

A ballistic missile is

Unpowered

Unguided

Both a and b

None

40 / 137

Product of Force and Time Is

Impulse

Momentum

Force

Inertia

41 / 137

A body Is dropped from a height 175m, how much time will it take to reach the ground?

3.5 sec

5.97 sec

4.68 sec

1 sec

42 / 137

Rate of change in displacement is known as:

PMC Sample 1
Physics
Forces and Motion
Elimination Tool:

A) Speed

B) Velocity

C) Acceleration

D) Momentum

43 / 137

A player throws a ball at an initial velocity of 36 m/second. The maximum distance the ball can reach (assume ball is caught at the same height at which it was released) is:

NTS 2011
Physics
Motion in Two Dimensions
Elimination Tool:

A) 146 m

B) 130 m

C) 132 m

D) 129 m

44 / 137

Upon signal of starting the race, the athlete starts from rest with a constant acceleration of 8 m/s2. At the same time, a cyclist traveling with a constant speed of 72 km/h passes the athlete. How far beyond the starting point will the athlete overtake the cyclist and what will be the speed of the athlete at the time when it overtakes the cyclist respectively?

NTS 2016 DUHS & JSMU
Physics
Motion in Two Dimensions
Elimination Tool:

A) 100 m , 40 m/s

B) 110 m , 50 m/s

C) 120 m , 60 m/s

D) 130 m , 70 m/s

45 / 137

A particle is travelling along a straight line OX. The distance x (in metre) of the particle from O at a time ′t′ is given by x = 37 +27t – t3 , where ‘t’ is time in seconds. The distance of the particle from O, when it comes to rest is:

NUMS 2014
Physics
Forces and Motion
Elimination Tool:

A) 81 m

B) 91 m

C) 101 m

D) 111 m

46 / 137

An object with an initial velocity of 4m/s moves along a straight axis under constant acceleration. Three seconds later,its velocity is 14m/s. How far did it travel during this time?

NTS 2015 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

A) 27 m/s

B) 17 m/s

C) 67 m/s

D) 57 m/s

47 / 137

.A stone dropped from a certain height can reach the ground in 5 s. It is stopped after 3 seconds of its fall and then allowed to fall again. Find the time taken by the stone to reach the ground for the remaining distance.

NTS 2014
Physics
Motion in Two Dimensions
Elimination Tool:

A) 2 s

B) 4 s

C) 6 s

D) 8 s

48 / 137

At what angle is the range of projectile the maximum?

90

0

45

None

49 / 137

Displacement of an object with respect to a constant moving (v) frame in the same direction is:

PMC Sample 1
Physics
Forces and Motion
Elimination Tool:

A) x – vt

B) x + vt

C) x

D) x + vt + at2

50 / 137

A box of mass m = 6 kg slides with speed v = 4 m/s across a frictionless floor. It suddenly explodes into two pieces. One-piece, with mass m1= 2 kg moves in the same direction with speed v1= 8 m/s . Find the velocity of the second piece.

NTS 2013
Physics
Motion in Two Dimensions
Elimination Tool:

A) 2 m/s

B) 4 m/s

C) 8 m/s

D) 9 m/s

51 / 137

A 3 kg stone falls from a 20m high platform. Find its falling speed at 10 m height.

NUMS 2020
Physics
Forces and Motion
Elimination Tool:

A) 196 ms-1

B) 14 ms-1

C) 10 ms-1

D) 100 ms-1

52 / 137

At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.1 m/s2. At the same instant a truck, traveling with a constant speed of 9.2 m/s, overtakes and passes the automobile. How far beyond the traffic signal will the automobile overtake the truck?

NTS 2010
Physics
Motion in Two Dimensions
Elimination Tool:

B) 30 m

C) 90 m

D) 120 m

E) 80.6 m

53 / 137

A horizontal line in a displacement-time graph represents:

PMC Sample 1
Physics
Motion in Two Dimensions
Elimination Tool:

A) Uniform accelerated motion

B) Motion with constant velocity

C) Motion with constant speed

D) Body at rest

54 / 137

The velocity of an object increases from 0 to 10 m/s in 2 seconds. The distance covered by the object is _________.

NUMS 2019 Reconduct
Physics
Motion in Two Dimensions
Elimination Tool:

A) 10 m

B) 7.5 m

C) 05 m

D) 2.5 m

55 / 137

A ball is thrown vertically upward with a velocity of 98 m/s. If it takes 10 seconds to reach the highest point then the acceleration of the ball is:

NUMS 2014
Physics
Motion in Two Dimensions
Elimination Tool:

A) 9.8m/s2

B) 98m/s2

C) 980m/s2

D) -9.8m/s2

56 / 137

Whenever the average and instantaneous velocities are equal the body is said to have a:

NTS 2016 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

A) Simple velocity

B) Uniform velocity

C) Directional velocity

D) Centripetal velocity

57 / 137

If the velocity of particle is varying linearly with time then shape of d-t curve would be

PMC Sample 2
Physics
Motion in Two Dimensions
Elimination Tool:

A) linear

B) quadratic

C) cubic

D) decreasing linearly

58 / 137

When a body of weight ‘W’ is kept suspended by a string, the weight of the body pulls the string downwards, while the string pulls the body upwards with an equal force, this force is called?

NTS 2015 SMBBMC
Physics
Forces and Motion
Elimination Tool:

A) The frequency of the string

B) The displacement of the string

C) The tension of the spring

D) The wavelength of the string

59 / 137

When a force acts at right angles to the displacement (θ=90°) the work done is zero i.e. the force does not produce work. Identify the example/s from the following when work is zero.

I. It is considered ‘hard work’ to hold a heavy stone stationary at stretched hand

II. A person walks along a level surface while carrying a box

III. when a body moves in circular path

NTS 2014
Physics
Forces and Motion
Elimination Tool:

B) II only

C) III only

D) II and III only

E) I, II and III

60 / 137

A particle is projected from the ground with a kinetic energy E at an angle of 60 degree with the horizontal. Its kinetic energy at the highest point of its motion will be:

NUMS 2019 Cancelled
Physics
Forces and Motion
Elimination Tool:

A) E

B) E/2

C) E/4

D) E/8

61 / 137

When a body is falling under the action of gravity the direction of acceleration is:

Upwards

Downwards

Towards Left

Towards Right

62 / 137

Unit of Momentum Is?

kg/s

kgms

kgm/s

None

63 / 137

A car travels 30 m towards east, then it takes turn and travels 40 m towards north. It takes 50 seconds in total. Its average velocity is:

PMC Sample 1
Physics
Motion in Two Dimensions
Elimination Tool:

A) 7/5 m/s

B) 1 m/s

C) 1/5 m/s

D) 5 m/s

64 / 137

The third law of motion given by Newton deals with an action- reaction pair of forces.

Consider two bodies: if the action is due to one body, the reaction will be due to:

NTS 2016 SMBBMC
Physics
Forces and Motion
Elimination Tool:

A) The other body

B) The same body

C) Both the bodies

D) Atmosphere

65 / 137

A particle is projected from the ground with a kinetic energy E at an angle of 60 degree with the horizontal. Its kinetic energy at the highest point of its motion will be:

NUMS 2014
Physics
Motion in Two Dimensions
Elimination Tool:

A) E

B) E/2

C) E/4

D) E/8

66 / 137

An object is falling down with a speed of 20 m/s. After 3 seconds

its velocity will be ______ m/s (g = 10 m/s2).

NTS 2019
Physics
Motion in Two Dimensions
Elimination Tool:

A) 05

B) 50

C) 55

D) 95

67 / 137

If the velocity of the body is decreasing, the acceleration is negative. The negative acceleration is known as:

NTS 2015 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

A) Retardation

B) Deceleration

D) Negative motion

E) Both A and B

68 / 137

Which one of the following force is non-conservative:

PMC 2020
Physics
Forces and Motion
Elimination Tool:

A) Frictional force

B) Gravitational force

C) Electric force

D) Elastic spring force

69 / 137

What force should be applied on a 10 kg body so that it moves down in a vacuum with an acceleration of 3 m/s2 ? (Take g=9.8 m/s2)

NTS 2013
Physics
Forces and Motion
Elimination Tool:

A) 42 N

B) 46 N

C) 68 N

D) 53 N

70 / 137

Which of the following statements is not true regarding the Newton’s third law of motion?

NUMS 2016
Physics
Forces and Motion
Elimination Tool:

A) To every action there is always an equal and opposite reaction

B) Action and reaction act on the same body

C) There is no cause-effect relation action and reaction

D) Action and reaction forces are simultaneous forces

71 / 137

A football, at rest on the ground, is kicked with an initial velocity of 10 m/s at a launch angle of 30°. Calculate its total flight time, assuming that air resistance is negligible.

NTS 2014
Physics
Motion in Two Dimensions
Elimination Tool:

A) 0.5 s

B) 1 s

C) 1.7 s

D) 2 s

72 / 137

A car is travelling in a straight line along a highway at a constant speed of 80miles per hour for 10 seconds. Find its acceleration.

NTS 2015 SMBBMC
Physics
Forces and Motion
Elimination Tool:

A) 100 m/s2

B) 200 m/s2

C) 0m/s2

D) 150m/s2

73 / 137

A bullet on penetrating 30cm into its target loses its velocity by 50%. What additional distance will it penetrate into its target before it comes to rest?

NUMS 2014
Physics
Motion in Two Dimensions
Elimination Tool:

A) 30 cm

B) 20cm

C) 10 cm

D) 5cm

74 / 137

If a car moves from 15 m/s to 5 m/s in 10 sec then average acceleration is

PMC Sample 3
Physics
Motion in Two Dimensions
Elimination Tool:

A) 1 m/s^2

B) 2m/s^2

C) 5 m/s^2

D) 10m/s^2

75 / 137

Identify the example/s of Static Equilibrium:

I. A book lying on a horizontal table
II. A building
III. A bridge

NTS 2012
Physics
Forces and Motion
Elimination Tool:

B) II and III only

C) I and III only

D) III only

E) I, II and III

76 / 137

If force of 2.5N changes the velocity from 50 m/s to 100m/s in time 50. the mass of the body’

5 kg

2.5 kg

1 kg

10kg

77 / 137

The range Of the projectile depends upon the velocity of the projection and the angle of the projection i.e 45. For a fixed velocity, when the angle of projection is larger than 45. Which of the following is correct?

UHS 2019
Physics
Motion in Two Dimensions
Elimination Tool:

A) The height attained by the projectile will be more but the range is less

B) Both the height and the range attained by the projectile will be more.

C) The height attained by the projectile will be less but the range is more.

D) Both the height and the range attained by the projectile will be less.

78 / 137

A ball is thrown from some height; it strikes the ground and bounces back to the same height. This scenario represents which situation:

Perfectly elastic

Elastic

Perfectly Inelastic

Inelastic

79 / 137

A bullet penetrating 30cm into its target loses its velocity by 50%. What additional distance will it penetrate into the target before it comes to rest?

NUMS 2019 Cancelled
Physics
Motion in Two Dimensions
Elimination Tool:

A) 30 cm

B) 20cm

C) 10 cm

D) 5cm

80 / 137

The slope of distance – time graph will always be:

PMC 2020
Physics
Motion in Two Dimensions
Elimination Tool:

A) Negative

B) Positive

C) Zero

D) Maximum

81 / 137

A body moving with velocity V can be stopped by a force F in direction of it. The same body moving with velocity 5 V can be stopped by a force 5F in distance equal to:

NUMS 2017
Physics
Forces and Motion
Elimination Tool:

A) X

B) 5X

C) 10X

D) X/2

82 / 137

Which of the following has no acceleration:

Man driving a car on busy road

Rock rolling down a mountain

A luggage in flying airplane

A car on a rough road

83 / 137

Third law of Newton is also called:

NUMS 2016
Physics
Forces and Motion
Elimination Tool:

A) Law of Inertia

B) Equilibrium

C) Law of action and reaction

D) None

84 / 137

A shot leaves a gun at the rate of 160 m/s. Calculate the greatest distance to which it could be projected. (Take g = 10 m/s2)

NTS 2013
Physics
Motion in Two Dimensions
Elimination Tool:

A) 2460 m

B) 2560 m

C) 2680 m

D) 2760 m

85 / 137

if a car starts from rest and reaches 20 m/s velocity in 10 s then acceleration is:

PMC Sample 3
Physics
Motion in Two Dimensions
Elimination Tool:

A) 20 m/s^2

B) 10 m/s^2

C) 5 m/s^2

D) 2m/s^2

86 / 137

The laws of motion show the relation between

Mass and acceleration

Mass and velocity

Mass and weight

Force and acceleration

87 / 137

An apple is thrown with a speed of 30 m/s in a direction 30° above the horizon. Find out its horizontal range. (g= 9.8 m/s2)

NTS 2015 DUHS and JSMU
Physics
Motion in Two Dimensions
Elimination Tool:

A) 20m

B) 40m

C) 60m

D) 80m

88 / 137

A body of mass 5 kg, initially at rest, is moved by a horizontal force of 2N on a smooth horizontal surface. Find the work done by the force in 10 sec:

NTS 2010
Physics
Forces and Motion
Elimination Tool:

A) 40 J

B) 30 J

C) 50 J

D) 20 J

89 / 137

Two bodies are projected at an angle of ɑ and (90 – θ) to the horizontal with the same speed. The ratio between their time of flight is:

NUMS 2019 Cancelled
Physics
Motion in Two Dimensions
Elimination Tool:

A) Cos θ : 1

B) Sin θ : 1

C) Sin θ : cos θ

D) Cos θ : sin θ

90 / 137

Newton’s 3rd law of motion is for bodies that are

In motion

At rest

Both a and b

None of these

91 / 137

Which one of the following statements is true concerning the motion of an ideal projectile launched at an angle of 45° to the horizontal?

NTS 2014
Physics
Motion in Two Dimensions
Elimination Tool:

B) The speed at the top of the trajectory is zero.

C) The object's total speed remains constant during the entire flight.

D) The horizontal speed decreases on the way up and also decreases on the way down.

E) The vertical speed decreases on the way up and increases on the way down.

92 / 137

Path followed by a projectile is known as?

Trajectory

Ellipse

Distance

None of these

93 / 137

Two bodies ‘x’ and ‘Y’ are attached to the ends of a string which passes over a pulley so that the two bodies hang vertically. If the mass of the body ‘x’ is 5 kg and that of body ‘Y’ is 4.8 kg. Find the acceleration?(g = 9.8 m/s^2)

NTS 2015 DUHS and JSMU
Physics
Forces and Motion
Elimination Tool:

A) 0.2 m/s2

B) 1.7 m/s2

C) 3.7 m/s2

D) 4.9 m/s2

94 / 137

A car starts from rest and moves with constant acceleration. During the 4th second of its motion, it covers a distance of 21 meters. The acceleration of the car is _____ m.

NTS 2019
Physics
Motion in Two Dimensions
Elimination Tool:

A) 04

B) 06

C) 08

D) 16

95 / 137

If a body is placed from poles to equator, the weight of the body will

Increase

Decrease

Stay constant

None of these

96 / 137

A rescue helicopter drops a package of emergency ration to a stranded party on the ground. If the helicopter is traveling at 40 m/s at a height of 100 m above the ground, where does the package strike the ground relative to the point at which it was released? (g= 9.8 m/s2)

NTS 2010
Physics
Motion in Two Dimensions
Elimination Tool:

A) 120 m

B) 130 m

C) 140 m

D) 180.7 m

97 / 137

A block of mass 50 kg is pulled on a frictionless floor by a force of 210 N directed at 30 degrees to the horizontal. If the block moves 3.0 m, what is the work done on it by the applied force?

NTS 2013
Physics
Forces and Motion
Elimination Tool:

A) 115√2 J

B) 215√2 J

C) 315√3 J

D) 415√2 J

98 / 137

Equations of kinetics are valid only when the acceleration is:

NTS 2018
Physics
Forces and Motion
Elimination Tool:

A) Increasing

B) Decreasing

C) Constant

D) Vary with time

99 / 137

A ball is thrown vertically upward with the velocity of 98 m/sec, how high does the ball rise?

NTS 2012
Physics
Motion in Two Dimensions
Elimination Tool:

A) 196 m

B) 2 m

C) 1/2 m

D) 490 m

100 / 137

Two bodies ‘X’ and ‘Y’ are attached to the ends of a string which passes over a pulley so that the two bodies hang vertically. If the mass of the body ‘X’ is 10 kg and that of ‘Y’ is 9.8 kg. Find the acceleration? (g = 9.8 m/s2)

NTS 2016 DUHS & JSMU
Physics
Forces and Motion
Elimination Tool:

A) 0.2 m/s-2

C) 3.2 m/s -2

D) 4.2 m/s -2

E) 0.10m/s -2

101 / 137

A person having a mass of 60 kilograms exerts a horizontal force of 200 Newtons in pushing a 90 kilogram object a distance of 6 meters along a horizontal floor. He does this at constant velocity in 3 seconds. The weight of this person approximately, in Newtons, is: (g=9.8m/s2)

NTS 2017
Physics
Forces and Motion
Elimination Tool:

A) 40 N

B) 90 N

D) 400 N

E) 600 N

102 / 137

A mass has constant acceleration, what is true about the force applied on it?

NUMS 2016
Physics
Forces and Motion
Elimination Tool:

A) Constantly increasing

B) Constant but not zero

C) Is directly proportional to square of displacement

D) Is directly proportional to velocity

103 / 137

The point at which an applied force produces linear motion but no rotatory Motion is:

NUMS 2014
Physics
Forces and Motion
Elimination Tool:

A) Mid-point

B) Center of gravity

C) Optical center

D) Pole

104 / 137

A ball is thrown vertically upward with a velocity of 98 m/s. How long does it take to reach its highest point?

NTS 2016 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

A) 2 seconds

B) 5 seconds

C) 7 seconds

D) 10 seconds

105 / 137

At what angle of projection of a projectile the range becomes half of its maximum value?

PMC 2020
Physics
Motion in Two Dimensions
Elimination Tool:

A) 15

B) 20

C) 30

D) 40

106 / 137

The unit of impulse is same as of

Force

Momentum

Acceleration

Work

107 / 137

.A rock is thrown straight upward from the edge of a 30 m cliff, rising 10 m then falling all the way down to the base of the cliff.

Find the rock’s displacement.

NTS 2014
Physics
Motion in Two Dimensions
Elimination Tool:

A) 20 meters downward

B) 30 meters downward

C) 40 meters upward

D) 50 meters upward

108 / 137

Two cars are travelling towards each other on a straight road at velocities 15 m/s and 16 m/s respectively. When they are 150 m apart, both the drivers apply the brakes and the cars decelerate at 3 m/s2 and 4 m/s2 until they stop. Separation between the cars when they come to rest is :

PMC Sample 2
Physics
Motion in Two Dimensions
Elimination Tool:

A) 86.5 m

B) 89.5 m

C) 85.5 m

D) 80.5 m

109 / 137

When the force and the displacement are in the opposite directions, the work done by the force is ______.

NTS 2015 DUHS and JSMU
Physics
Forces and Motion
Elimination Tool:

A) Positive

B) Negative

C) Zero

D) All of the above

110 / 137

In elastic collision

KE is conserved

Momentum is conserved

Both a and b

None of these

111 / 137

Time period of simple pendulum depends on

Mass

Length of the pendulum

Acceleration due to gravity g

Both b and c

112 / 137

The relation of time of flight with Initial velocity is?

2u/g

u^2/2g

u/g

2g/u

113 / 137

Law of Conservation of Momentum states that total linear momentum of system remains constant if:

NUMS 2019 Reconduct
Physics
Forces and Motion
Elimination Tool:

A) Balanced external forces are applied to a system

B) No external force is applied to a system

C) Only linear force is applied in a system is zero

D) Sum of external forces are applied to a system is zero

114 / 137

A motion with increasing velocity can be represented on displacement-time graph by:

PMC Sample 1
Physics
Forces and Motion
Elimination Tool:

A) A horizontal line

B) A curve line with a decreasing gradient

C) A straight line with a constant gradient

D) A curve line with an increasing gradient

115 / 137

In projectile motion, which velocity component remains same throughout the flight?

Horizontal component

Vertical component

Both a and b

None of these

116 / 137

The time rate of change of linear momentum of a body is equal to:

NUMS 2020
Physics
Forces and Motion
Elimination Tool:

A) Force

B) Momentum

C) Power

D) Acceleration

117 / 137

A particle is projected at an angle of 45 degrees with a velocity of 9.8 m/s. The horizontal range will be:

(g=9.8 m/s2)

NTS 2012
Physics
Motion in Two Dimensions
Elimination Tool:

A) 9.8 /√2 m

B) 9.8 √3 m

C) 9.8 m

D) 4.9 m

118 / 137

Whenever the average and instantaneous velocities are equal the body is said to have a:

NTS 2016 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

A) Simple velocity

B) Uniform velocity

C) Directional velocity

D) Centripetal velocity

119 / 137

A car at rest starts moving with linear uniformly increasing velocity. After 20 seconds, it attains the maximum velocity of 80 m/s. What is the distance covered during this time interval?

NUMS 2019 Cancelled
Physics
Forces and Motion
Elimination Tool:

A) 200 m

B) 400 m

C) 800 m

D) 1600 m

120 / 137

A balloon Is going upwards with a velocity 12 m/s. it releases a packet when it is at a height of 65 from ground. flow much time the packet will take to reach the ground if g=10 m/s^2?

5

6

7

8

121 / 137

Formula for Horizontal Range of projectile is

v^2sin2Θ/g

vsin2Θ/g

2vsin2Θ/g

None

122 / 137

Instantaneous velocity is defined as

PMC Sample 3
Physics
Motion in Two Dimensions
Elimination Tool:

A) dx/dt

B) Δx/Δt

C) Δx.Δt

D) Δv/Δt

123 / 137

A car of mass 1200 kg initially at rest has been accelerated to a speed of 8 m/s in 16 meters. Average acceleration of the car is ______ m/s2? And force is _____ N?

NTS 2019
Physics
Forces and Motion
Elimination Tool:

A) 1.5 and 1500

B) 2.5 and 2400

C) 3.5 and 3500

D) 2 and 2400

124 / 137

Two forces equal in magnitude but opposite In direction and not acting along the same line constitute a couple. The movement of this couple will be:

NTS 2018
Physics
Forces and Motion
Elimination Tool:

A) Dependent on the location of the origin

B) Independent of the location of the origin

C) Zero

D) Scalar product

125 / 137

A stone is thrown horizontally from 2.4 m above the ground at 35 m/s. The wall is 14 m away and 1 m high. At what height will the stone reach when at the wall? Where will the stone land?

NTS 2016 DUHS & JSMU
Physics
Motion in Two Dimensions
Elimination Tool:

A) 1.62 m , 24.5 m

B) 2.22 m , 31 m

C) 3.22 m , 41 m

D) 4.22 m , 51 m

126 / 137

Ball thrown freely from a tower reaches ground in 4s. The height of tower Is about

20m

40m

80m

160m

127 / 137

The area under force-displacement graph gives us:

NUMS 2020
Physics
Forces and Motion
Elimination Tool:

A) Displacement

B) Power

C) Work

D) Acceleration

128 / 137

A constant force acting on a body of mass 5 kg changes its speed from 2 /s to 7 m/s in 10 s the direction of motion of the body remains unchanged. Find the magnitude of the force.

NTS 2013
Physics
Forces and Motion
Elimination Tool:

A) 0.5 N

B) 1.5 N

C) 2.5 N

D) 3.5 N

129 / 137

A ball falls vertically and bounces on the ground. The following statements are about the forces acting while the ball is in contact with the ground. Which statement is correct?

NTS 2017
Physics
Forces and Motion
Elimination Tool:

A) The force that the ball exerts on the ground is always equal to the weight of the ball.

B) The force that the ball exerts on the ground is always equal in magnitude and opposite in direction to the force the ground exerts on the ball.

C) The force that the ball exerts on the ground is always greater than the weight of the ball.

D) The weight of the ball is always equal and opposite to the force that the ground exerts on the ball.

130 / 137

The expression dp/dt represents

Impulse

Time

Angular momentum

Force

131 / 137

Which of the following changes, when particle Is moving with uniform velocity?

Speed

Velocity

Acceleration

Position Vector

132 / 137

Which of the following is the angle of projection of a projectile if its range is equal to its height?

NUMS 2020
Physics
Forces and Motion
Elimination Tool:

A) 48

B) 60

C) 90

D) 76

133 / 137

A particle with Initial velocity 40 m/s moving with a constant acceleration 10 m/s Is distance covered In 5 second will be

375 m

240 m

85 m

125 m

134 / 137

The force which will accelerate a 25 kg mass at 98 cm/s2 on a smooth horizontal plane is:

NTS 2016 SMBBMC
Physics
Forces and Motion
Elimination Tool:

A) 200 Newton

B) 1950 Newton

C) 19.6 Newton

D) 24.5 Newton

135 / 137

When a car moves with constant velocity force on it is

Up

Down

Left

Zero

136 / 137

If we drop an object, it’s initial velocity is zero. How far will it fall in time ‘t’?

PMC 2020
Physics
Motion in Two Dimensions
Elimination Tool:

A) 9.8 t2

B) 4.9 t2

C) 0.49 t2

D) 98 t2

137 / 137

A stone dropped from the roof of a building takes 4 s to reach the ground. The height of the building is:

NUMS 2017
Physics
Motion in Two Dimensions
Elimination Tool:

A) 9.8 m

B) 19.6 m

C) 39.2 m

D) 78.4 m

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