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HOTS Questions: Forces & Laws of Motion for Class 9 - Free MCQ Test

MCQ Practice Test & Solutions: HOTS Questions: Forces & Laws of Motion (25 Questions)

You can prepare effectively for Class 9 Online MCQ Tests for Class 9 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "HOTS Questions: Forces & Laws of Motion". These 25 questions have been designed by the experts with the latest curriculum of Class 9 2026, to help you master the concept.

Test Highlights:

- Format: Multiple Choice Questions (MCQ)
- Duration: 25 minutes
- Number of Questions: 25

HOTS Questions: Forces & Laws of Motion - Question 1

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Match the following with correct response.

A.
1-B, 2-D, 3-A, 4-C
B.
1-C, 2-B, 3-D, 4-A
C.
1-A, 2-C, 3-B, 4-D
D.
1-D, 2-A, 3-C, 4-B

Detailed Solution: Question 1

1) A cart is pulled by the horse as the horse applies a force on earth and earth applies a equal and opposite force. this is stated in Newton third law of motion.
2) We get a backward jerk due to inertia as the car speeds up and our body tends to move backwards and resist the change.
3) Sole of shoe worns out due to friction.
4) The spring in the gun transfers the momentum to the bulletand according to law of conservation of momentum the gun recoils.

HOTS Questions: Forces & Laws of Motion - Question 2

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Dust particles come out of a hanging carpet when we strike it with a stick because-
A. Carpet starts moving forward and backward due to inertia of motion
B. Dust particles remain at rest
C. Dust particles starts moving forward due to inertia of motion
D. Carpet remains at rest

A.
(a), (b) and (c) are correct
B.
(a) and (b) are correct
C.
(b) and (c) are correct
D.
All of these

Detailed Solution: Question 2

This is because when we hit a carpet the carpet starts moving forward and its inertia of rest changes into the inertia of motion but the dust particles which are there with the carpet they move just because of the carpet but actually the particles remain at rest that is why these particles fall of due to the change of inertia.

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HOTS Questions: Forces & Laws of Motion - Question 3

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Find the incorrect statement about Newton’s law of action and reaction. Action and reaction

A.
are equal in magnitude
B.
act on same bodies
C.
act simultaneously
D.
are different in direction

Detailed Solution: Question 3

Newton's third law states that for every action, there is an equal and opposite reaction. This means that the forces are equal in magnitude (1), act simultaneously (3), and are opposite in direction (4). However, they act on different bodies, not the same one.

HOTS Questions: Forces & Laws of Motion - Question 4

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If an object experiences a net zero unbalanced force, than the body

A.
moves with constant velocity
B.
cannot remain at rest
C.
can be accelerated
D.
none of these

Detailed Solution: Question 4

If an object experience a net zero unbalanced force, than the body moves with constant velocity. Zero unbalanced force due to produce acceleration in the body.

HOTS Questions: Forces & Laws of Motion - Question 5

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Match the following with correct response.

A.
1-C, 2-B, 3-D, 4-A
B.
1-B, 2-D, 3-A, 4-C
C.
1-A, 2-C, 3-B, 4-D
D.
1-D, 2-A, 3-C, 4-B

Detailed Solution: Question 5

D is the correct option.Force is the cause of acceleration. Mass Is the quantitative measure Of inertia. We apply powder on the carrom board to decrease friction. Tyres of vehicles made rough to increase friction.

HOTS Questions: Forces & Laws of Motion - Question 6

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A force of 7 kg-wt acts on a body of mass 10 kg calculate the acceleration produced.

A.
7 ms⁻²
B.
8 ms⁻²
C.
10 ms⁻²
D.
6 ms⁻²

Detailed Solution: Question 6

HOTS Questions: Forces & Laws of Motion - Question 7

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Which is incorrect statement about action and reaction referred to Newton’s third law of motion?
A. They are equal
B. They are opposite
C. They act on same object
D. They act simultaneously

A.
(a) and (c) are correct
B.
(b) and (c) are correct
C.
(a), (b) and (c) are correct
D.
option c

Detailed Solution: Question 7

Newton’s third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A.

For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.

The objects interact. The action and reaction force always act on different objects. Two forces acting on the same object, even if they have the same magnitude and point in opposite directions, never form an action-reaction pair.

HOTS Questions: Forces & Laws of Motion - Question 8

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Statement A: A passenger falls forward when a bus suddenly starts moving in the forward direction
Statement B: A gun recoils backward with small speed than the bullet moving forward.

A.
statement B is true
B.
statement A is true
C.
both the statement A and B are true
D.
neither statement A nor Statement B is true

Detailed Solution: Question 8

A passenger falls backward when a bus suddenly start moving in the forward direction due inertia of rest. A gun recoils backward with small speed than the bullet moving forward due to law of conservation of momentum.

HOTS Questions: Forces & Laws of Motion - Question 9

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When a force is exerted on an object, it can change its-
A. State
B. Position
C. Shape
D. Direction

A.
(a), (b) and (c) are correct
B.
(b) and (c) are correct
C.
(a) and (b) are correct
D.
All of these

Detailed Solution: Question 9

D is the correct option.A force acting on an object causes the object to change its shape or size, to start moving, to stop moving, to accelerate or decelerate. When there's the interaction between two objects they exert a force on each other, these exerted forces are equal in size but opposite in direction.

HOTS Questions: Forces & Laws of Motion - Question 10

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The physical quantity which is equal to the rate of change of momentum is

A.
force
B.
energy
C.
power
D.
impulse

Detailed Solution: Question 10

Force is the equal to the rate of change of momentum. Force = final momentum-initial momentum/time , f = mv-mu/t.

HOTS Questions: Forces & Laws of Motion - Question 11

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Which of the following is not used to reduce friction

A.
using oil between contact surfaces
B.
using ball bearing
C.
making scratches on the contact surfaces
D.
using grease between contact surfaces

Detailed Solution: Question 11

To reduce the friction, oiling between contact surface, using ball bearing and using grease between contact surfaces. Making scratches between contact surfaces increase the friction.

HOTS Questions: Forces & Laws of Motion - Question 12

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Match the following with correct response.

A.
1-C, 2-B, 3-D, 4-A
B.
1-D, 2-A, 3-C, 4-B
C.
1-A, 2-C, 3-B, 4-D
D.
1-B, 2-D, 3-A, 4-C

Detailed Solution: Question 12

Inertia → (B) Mass of the object
- Explanation: Inertia is the tendency of an object to resist changes in its state of motion, which depends on its mass.
Friction → (D) Necessary evil
- Explanation: Friction opposes motion but is necessary for everyday activities like walking and driving.
Momentum → (A) Product of mass and velocity
- Explanation: Momentum is defined as the product of mass and velocity (p=mvp = mvp=mv).
Force → (C) Rate of change of momentum
- Explanation: According to Newton's Second Law, force is the rate of change of momentum.

HOTS Questions: Forces & Laws of Motion - Question 13

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The instruments that make our work easier are called

A.
Generator
B.
Machine
C.
Motor
D.
Electric current

Detailed Solution: Question 13

Answer:
The instruments that make our work easier are called machines. Machines are tools or devices that are designed to perform specific tasks or functions. They are created to simplify and automate various processes, making work more efficient and less labor-intensive. Here are some key points to consider:
- Definition: Machines are mechanical or electrical devices that use energy to perform work. They can be simple, such as a lever or a pulley, or complex, like a computer or a car.
- Types: There are various types of machines, each designed for a specific purpose. Some common examples include generators, motors, and electric currents. However, it is important to note that these are specific types of machines, and the term "machine" itself is a more general term.
- Function: Machines are used to make work easier by reducing the amount of force, energy, or time required to complete a task. They can increase productivity, improve precision, and enable humans to perform tasks that would otherwise be impossible or extremely difficult.
- Examples: Machines can be found in almost every aspect of our daily lives. Some common examples include cars, computers, washing machines, elevators, and power tools. These machines have revolutionized industries and have greatly enhanced our quality of life.
- Importance: Machines have had a profound impact on society, driving technological advancements and shaping the way we live and work. They have played a crucial role in industrialization, automation, and the development of new industries.
In conclusion, machines are the instruments that make our work easier. They are designed to perform specific tasks or functions, using energy to simplify and automate various processes. From simple tools to complex devices, machines have revolutionized industries and greatly enhanced our quality of life.

HOTS Questions: Forces & Laws of Motion - Question 14

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Which of the following physical quantity is associated with Newton’s second law of motion?

A.
velocity
B.
time
C.
mass
D.
all of these

Detailed Solution: Question 14

Newton’s second law of motion states that rate of change in momentum is equal to force applied. Momentum is the product of mass and velocity. So, mass, velocity and time all are associated with Newton’s second law of motion.

HOTS Questions: Forces & Laws of Motion - Question 15

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What is the momentum of an object of mass 1/2 m, moving with a velocity 2v?

A.
mv
B.
mv²
C.
1/2 mv²
D.
(mv)²

Detailed Solution: Question 15

Momentum of a body is equal to product of mass and velocity. Momentum

HOTS Questions: Forces & Laws of Motion - Question 16

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Match the following with correct response.

A.
1-B, 2-A, 3-C, 4-D
B.
1-A, 2-C, 3-B, 4-D
C.
1-B, 2-D, 3-A, 4-C
D.
1-C, 2-B, 3-D, 4-A

Detailed Solution: Question 16

Newton’s first law of motion → (B): It states that an object remains at rest or in uniform motion unless acted upon by an external force.
Newton’s second law of motion → (A): It states that force is directly proportional to the product of mass and acceleration (F=maF = maF=ma).
Newton’s third law of motion → (C): It states that every action has an equal and opposite reaction.
Galileo’s law of inertia → (D): It states that an object will remain at rest or in uniform motion unless an external force acts on it.

HOTS Questions: Forces & Laws of Motion - Question 17

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An Object moving along a straight path with an accelerated motion. The correct statement about the object-
A. Its velocity keeps changing
B. Its speed keeps changing
C. A force is always acting on it
D. Its mass keeps on changing

A.
(a) and (b) are correct
B.
(b) and (c) are correct
C.
(a), (b) and (c) are correct
D.
All of these

Detailed Solution: Question 17

The correct option is Option C.
This is because when acceleration increases so will speed and velocity. As acceleration is a type of accelerated force a force will always act on the body.

HOTS Questions: Forces & Laws of Motion - Question 18

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State whether the following statement is true or false “force can be measured using first law of motion”

A.
true
B.
false
C.
partially true
D.
partially false

Detailed Solution: Question 18

The force can be measured by newton’s second law of motion. First law of motion states that object in rest or uniform motion tends to remain in its state.

HOTS Questions: Forces & Laws of Motion - Question 19

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“Internal forces are forces which bodies exert on each other when the bodies are part of the system” is

A.
false
B.
true
C.
partially true
D.
partially false

Detailed Solution: Question 19

Internal forces are those forces which exert on each other when the bodies are part of the system. The forces acting between the atoms of molecules that keep them together are example of internal force.

HOTS Questions: Forces & Laws of Motion - Question 20

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Match the following with correct response.

A.
1-B, 2-D, 3-A, 4-C
B.
1-A, 2-C, 3-B, 4-D
C.
1-C, 2-B, 3-D, 4-A
D.
1-D, 2-A, 3-C, 4-B

Detailed Solution: Question 20

Force → (A) Newton
- Explanation: The SI unit of force is Newton (N), named after Sir Isaac Newton.
Momentum → (C) kg m/s
- Explanation: Momentum is the product of mass and velocity, and its unit is kg·m/s.
Unbalanced force → (B) Acceleration
- Explanation: An unbalanced force causes a change in motion, resulting in acceleration according to Newton’s Second Law.
Principle on which rocket works → (D) Newton’s third law of motion
- Explanation: Rockets work based on Newton’s Third Law, which states that for every action, there is an equal and opposite reaction.

HOTS Questions: Forces & Laws of Motion - Question 21

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The passenger feels a jerk forward when a bus moving at a high speed suddenly stops. This happens due to

A.
gravitational pull of the Earth
B.
inertia of bus
C.
inertia of passenger
D.
none of these

Detailed Solution: Question 21

When a moving bus at high speed suddenly stops, the passenger feels jerk in forwarding direction due to the inertia of motion, which tends to keep the moving body in motion.

HOTS Questions: Forces & Laws of Motion - Question 22

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“A body moves with a constant speed of 5m/s. This shows that no unbalanced forces are acting on the body” is a

A.
false statement
B.
partially true
C.
true statement
D.
partially false

Detailed Solution: Question 22

If no unbalance force acts on the body, the speed of body remain constant. So, a body moving with constant speed of 5m/s does not have any unbalanced force acting on it.

HOTS Questions: Forces & Laws of Motion - Question 23

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Match the following with correct response.

A.
1-B, 2-D, 3-A, 4-C
B.
1-C, 2-B, 3-D, 4-A
C.
1-D, 2-A, 3-C, 4-B
D.
1-A, 2-C, 3-B, 4-D

Detailed Solution: Question 23

Friction → (C) Force that opposes motion
- Explanation: Friction is a resistive force that opposes the relative motion between two surfaces in contact.
Limiting friction → (B) Force just sufficient to move the object
- Explanation: Limiting friction is the maximum static friction that must be overcome before an object starts moving.
Sliding friction → (D) Force sufficient to slide one object over another
- Explanation: Sliding friction occurs when one surface moves over another, and it is usually less than limiting friction.
Rolling friction → (A) When one object rolls over another
- Explanation: Rolling friction occurs when an object rolls over a surface, and it is usually less than sliding friction.

HOTS Questions: Forces & Laws of Motion - Question 24

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Weight of a body due to the Earth acts

A.
vertically downwards
B.
horizontal
C.
in any direction
D.
vertically upwards

Detailed Solution: Question 24

The weight of the body is the measure of force by which object is attracted towards the centre of earth. It always acts vertically downwards.

HOTS Questions: Forces & Laws of Motion - Question 25

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Same amount of force is acting on a car and bus. It the ratio of the mass of the bus and the car is 50:1, calculate the ratio of the acceleration produced in the bus to the acceleration produced in the car

A.
50:1
B.
1:50
C.
1:25
D.
25:1

Detailed Solution: Question 25

F₁= mass of car x acceleration produced in the car =m₁*a₁
F₂= mass of bus x acceleration produced in the bus =m₂*a₂
m₂/m₁= 1:50
since F₁= F₂
m₁*a₁ =m₂*a₂
a₁/a₂ =m₂/m
=1:50

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HOTS Questions: Forces & Laws of Motion for Class 9 - Free MCQ Test

MCQ Practice Test & Solutions: HOTS Questions: Forces & Laws of Motion (25 Questions)

Match the following with correct response.

Dust particles come out of a hanging carpet when we strike it with a stick because- A. Carpet starts moving forward and backward due to inertia of motion B. Dust particles remain at rest C. Dust particles starts moving forward due to inertia of motion D. Carpet remains at rest

Find the incorrect statement about Newton’s law of action and reaction. Action and reaction

If an object experiences a net zero unbalanced force, than the body

Match the following with correct response.

A force of 7 kg-wt acts on a body of mass 10 kg calculate the acceleration produced.

Which is incorrect statement about action and reaction referred to Newton’s third law of motion? A. They are equal B. They are opposite C. They act on same object D. They act simultaneously

Statement A: A passenger falls forward when a bus suddenly starts moving in the forward direction Statement B: A gun recoils backward with small speed than the bullet moving forward.

When a force is exerted on an object, it can change its- A. State B. Position C. Shape D. Direction

The physical quantity which is equal to the rate of change of momentum is

Which of the following is not used to reduce friction

Match the following with correct response.

The instruments that make our work easier are called

Which of the following physical quantity is associated with Newton’s second law of motion?

What is the momentum of an object of mass 1/2 m, moving with a velocity 2v?

Match the following with correct response.

An Object moving along a straight path with an accelerated motion. The correct statement about the object- A. Its velocity keeps changing B. Its speed keeps changing C. A force is always acting on it D. Its mass keeps on changing

State whether the following statement is true or false “force can be measured using first law of motion”

“Internal forces are forces which bodies exert on each other when the bodies are part of the system” is

Match the following with correct response.

The passenger feels a jerk forward when a bus moving at a high speed suddenly stops. This happens due to

“A body moves with a constant speed of 5m/s. This shows that no unbalanced forces are acting on the body” is a

Match the following with correct response.

Weight of a body due to the Earth acts

Same amount of force is acting on a car and bus. It the ratio of the mass of the bus and the car is 50:1, calculate the ratio of the acceleration produced in the bus to the acceleration produced in the car

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Dust particles come out of a hanging carpet when we strike it with a stick because-
A. Carpet starts moving forward and backward due to inertia of motion
B. Dust particles remain at rest
C. Dust particles starts moving forward due to inertia of motion
D. Carpet remains at rest

Which is incorrect statement about action and reaction referred to Newton’s third law of motion?
A. They are equal
B. They are opposite
C. They act on same object
D. They act simultaneously

Statement A: A passenger falls forward when a bus suddenly starts moving in the forward direction
Statement B: A gun recoils backward with small speed than the bullet moving forward.

When a force is exerted on an object, it can change its-
A. State
B. Position
C. Shape
D. Direction

An Object moving along a straight path with an accelerated motion. The correct statement about the object-
A. Its velocity keeps changing
B. Its speed keeps changing
C. A force is always acting on it
D. Its mass keeps on changing