Unit 3 Dynamics Physics 9th Class Punjab MCQ Tests
9th Class Physics Unit 3 MCQ Tests
Unit 3 of 9th Class Physics has 33 questions. If you take an online MCQ test, the system will randomly choose the questions. If you want to take the quiz by chapter then click the start test button.
Total Questions: 33
Total Marks: 33
Time: 35 Mins
Total Questions: 33
Total Marks: 33
Time: 35 Mins
35Min : 00 Sec Remaining
Question # 1
When a climber arrives the top of a mountain, what happens to his weight?
The force of gravity of Earth decreases with increase in distance from the Earth's surface.
Question # 2
Why are the roads with sharp turns made banked?
To move in a circular path (just like in a sharp turn), a force is required to move the car in a circular direction.
Question # 3
?If string is stretched by two opposite forces of 10 N then tension in string is
Question # 4
If pressing force on sliding surfaces is greater, then friction will be
Question # 5
What type of force is needed if we want to walk on ground?
We need such a force to walk, that when we walk, our feet push the ground backwards and according to Newton's third law, the ground pushes us forward.
Question # 6
When a cat sleeps on a table, the net force on it is
Question # 7
Why a gun recoils and the shoulder is pressed hard by the gun when it is fired?
Question # 8
A man lifts a block of 20 kg in upward direction with a force of 400 N. What is the acceleration in the block?
Question # 9
When a car takes a turn, which force is needed to keep it in its curved track
Question # 10
momentum of a body is equal to the product of its
Question # 11
Why is it difficult to walk on a muddy ground?
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
Question # 12
What will be the effect on the centripetal force if the velocity → v of an object of mass m is doubled?
Question # 13
Which of the soles shown in image will wear out early?
Question # 14
A block of mass 10 kg is placed on a horizontal surface, on which an applied force of 80 N produces an acceleration. Find the acceleration produced. Then find that how much time is required for the bl
Question # 15
Two cars of masses 100 kg and 170 kg are moving with velocities 50 m s − 1 and 75 m s − 1 , respectively. Find the combined final velocity of both cars after the collision.
Question # 16
Mass and weight
Question # 17
The acceleration of an object is inversely proportional to
Question # 18
A car of mass 1100 kg is moving in a circular path with a velocity of 50 ms − 1 . If the radius of the circular path is 50 m, find the centripetal force acting on the car.
Question # 19
The momentum of an isolated system of two or more than two interacting bodies remains constant is called
Question # 20
When a car starts moving, what causes a person sitting in it to fall backward?
The lower part of the body is in contact with the seat of car, that's why the lower part of body moves forward with the car.
Question # 21
smooth air flow at high speeds reduces
Question # 22
How many radians are equal to 4 degrees?
Evaluate the radians according to 1 r a d = 57.3°
Question # 23
What should be the state of an object in order for the application of inertia on it?
The inertia of an object is due to its mass.
Question # 24
Interaction that causes movement and change in shape is
Question # 25
When the brakes are applied, the kinetic energy is converted into which form of energy?
In mechanical braking, some or all of the vehicles wheels are fitted with brake pads which apply a friction force that stops the motion of the wheels.
Question # 26
when two particles repel one another, they each develop a momentum in
Question # 27
What is the main cause that makes it difficult to stop a fast moving and heavy vehicle?
Think in terms of momentum, where the momentum is given by → p = m → v .
Question # 28
Why are ball bearings used to reduce friction instead of small blocks?
Question # 29
a satellite revolving round the earth in a circular orbit performs
Question # 30
Property due to which a body resists change in its state is called
Question # 31
Why is it dangerous to jump from a moving vehicle?
When a person jumps from a vehicle, the feet of the person come to rest when they touch the ground.
Question # 32
A body of mass 1000 g is moving in a circle of radius 75 cm with a velocity of 8 m s − 1 . Calculate its centripetal acceleration.
Question # 33
Which of the following factors makes it possible for us to walk on a straight road?
Total Questions
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Question # 1
When a climber arrives the top of a mountain, what happens to his weight?
The force of gravity of Earth decreases with increase in distance from the Earth's surface.
Question # 2
Why are the roads with sharp turns made banked?
To move in a circular path (just like in a sharp turn), a force is required to move the car in a circular direction.
Question # 3
?If string is stretched by two opposite forces of 10 N then tension in string is
Question # 4
If pressing force on sliding surfaces is greater, then friction will be
Question # 5
What type of force is needed if we want to walk on ground?
We need such a force to walk, that when we walk, our feet push the ground backwards and according to Newton's third law, the ground pushes us forward.
Question # 6
When a cat sleeps on a table, the net force on it is
Question # 7
Why a gun recoils and the shoulder is pressed hard by the gun when it is fired?
Question # 8
A man lifts a block of 20 kg in upward direction with a force of 400 N. What is the acceleration in the block?
Question # 9
When a car takes a turn, which force is needed to keep it in its curved track
Question # 10
momentum of a body is equal to the product of its
Question # 11
Why is it difficult to walk on a muddy ground?
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
Question # 12
What will be the effect on the centripetal force if the velocity → v of an object of mass m is doubled?
Question # 13
Which of the soles shown in image will wear out early?
Question # 14
A block of mass 10 kg is placed on a horizontal surface, on which an applied force of 80 N produces an acceleration. Find the acceleration produced. Then find that how much time is required for the bl
Question # 15
Two cars of masses 100 kg and 170 kg are moving with velocities 50 m s − 1 and 75 m s − 1 , respectively. Find the combined final velocity of both cars after the collision.
Question # 16
Mass and weight
Question # 17
The acceleration of an object is inversely proportional to
Question # 18
A car of mass 1100 kg is moving in a circular path with a velocity of 50 ms − 1 . If the radius of the circular path is 50 m, find the centripetal force acting on the car.
Question # 19
The momentum of an isolated system of two or more than two interacting bodies remains constant is called
Question # 20
When a car starts moving, what causes a person sitting in it to fall backward?
The lower part of the body is in contact with the seat of car, that's why the lower part of body moves forward with the car.
Question # 21
smooth air flow at high speeds reduces
Question # 22
How many radians are equal to 4 degrees?
Evaluate the radians according to 1 r a d = 57.3°
Question # 23
What should be the state of an object in order for the application of inertia on it?
The inertia of an object is due to its mass.
Question # 24
Interaction that causes movement and change in shape is
Question # 25
When the brakes are applied, the kinetic energy is converted into which form of energy?
In mechanical braking, some or all of the vehicles wheels are fitted with brake pads which apply a friction force that stops the motion of the wheels.
Question # 26
when two particles repel one another, they each develop a momentum in
Question # 27
What is the main cause that makes it difficult to stop a fast moving and heavy vehicle?
Think in terms of momentum, where the momentum is given by → p = m → v .
Question # 28
Why are ball bearings used to reduce friction instead of small blocks?
Question # 29
a satellite revolving round the earth in a circular orbit performs
Question # 30
Property due to which a body resists change in its state is called
Question # 31
Why is it dangerous to jump from a moving vehicle?
When a person jumps from a vehicle, the feet of the person come to rest when they touch the ground.
Question # 32
A body of mass 1000 g is moving in a circle of radius 75 cm with a velocity of 8 m s − 1 . Calculate its centripetal acceleration.
Question # 33
Which of the following factors makes it possible for us to walk on a straight road?
Total Questions
123456789101112131415161718192021222324252627282930313233
Physics MCQ Test by Topics
- +3.1 Force, Inertia and momentum
- +3.1 Force
- +3.1 Inertia
- +3.1 Momentum
- +3.2 Newtons Law of Motion
- +3.2 Newtons First Law of Motion
- +3.2 Newtons Second Law of Motion
- +3.2 Mass and Weight
- +3.2 Newtons Third Law of Motion
- +3.2 Tension and acceleration in a Sting
- +3.2 Vertical motion of two bodies attached to the ends of a string that passes over a Frictionless Pulle
- +3.2 Force and the Momentum
- +3.2 Law of Conservation of Momentum
- +3.3 Friction
- +3.3 Rolling Friction
- +3.3 Braking and Skidding
- +3.3 Advantages and Disadvantages of Friction
- +3.3 Methods of Reducing Friction
- +3.4 Uniform Circular Motion
- +3.4 Centripetal Force
- +3.4 Centrifugal Force
- +3.4 Banking of the Roads
- +3.4 Washing Machine Dryer
- +3.4 Cream Separator
Physics
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Updated on: 17-05-2026
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