Chapter 3 Dynamics Physics 9th Class Federal MCQ Tests
9th Class Physics Chapter 3 MCQ Tests
Chapter 3 of 9th Class Physics has 20 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: 20
Total Marks: 20
Time: 20 Mins
Total Questions: 20
Total Marks: 20
Time: 20 Mins
20Min : 00 Sec Remaining
Question # 1
If the resultant of action and reaction forces is evaluated, what would be the outcome?
Forces that act on different objects don't cancel, After all, they affect the motion of different objects! (correct)
Question # 2
What is the main cause that makes it difficult to stop a fast moving and heavy vehicle?
Question # 3
Why is the rolling friction less than the sliding friction?
Question # 4
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 # 5
Why are ball bearings used to reduce friction instead of small blocks?
Question # 6
Which of the following factors makes it possible for us to walk on a straight road?
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 # 7
We have two bodies with different masses. What is the comparison between the inertia of these two bodies?
Question # 8
A body of mass m is hanging vertically from ceiling with the help of a massless spring. The body is at rest and its weight is acting downwards. What is the comparison between the tension in the string and the weight of the body?
Question # 9
A block of mass 3 kg is pushed with a force of 100 N on a rough horizontal surface, where a frictional force of 20 N acts on the block. Find the acceleration of block.
Question # 10
Which of the soles shown in image offers less friction?
Question # 11
How many radians are equal to 4 degrees?
Question # 12
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 # 13
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 # 14
If the mass of a ball is 2 kg, then what is its mass on Earth and its weight on moon?
The mass of an object is same everywhere.
Question # 15
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 # 16
We have a kilogram of feathers, a kilogram of tin balls, and a kilogram of tennis balls. Which one of these has greater mass?
All given quantities have same mass (1 kg), no matter what the material is. (correct)
Question # 17
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 # 18
What will be the effect on the centripetal force if the velocity →v of an object of mass m is doubled?
Question # 19
While moving in a circular path, if we increase our speed then we have to bend towards the center of the circular path. Why do we have to bend towards the center?
Question # 20
Which of the soles shown in image will wear out early?
Total Questions
1234567891011121314151617181920
Question # 1
If the resultant of action and reaction forces is evaluated, what would be the outcome?
Forces that act on different objects don't cancel, After all, they affect the motion of different objects! (correct)
Question # 2
What is the main cause that makes it difficult to stop a fast moving and heavy vehicle?
Question # 3
Why is the rolling friction less than the sliding friction?
Question # 4
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 # 5
Why are ball bearings used to reduce friction instead of small blocks?
Question # 6
Which of the following factors makes it possible for us to walk on a straight road?
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 # 7
We have two bodies with different masses. What is the comparison between the inertia of these two bodies?
Question # 8
A body of mass m is hanging vertically from ceiling with the help of a massless spring. The body is at rest and its weight is acting downwards. What is the comparison between the tension in the string and the weight of the body?
Question # 9
A block of mass 3 kg is pushed with a force of 100 N on a rough horizontal surface, where a frictional force of 20 N acts on the block. Find the acceleration of block.
Question # 10
Which of the soles shown in image offers less friction?
Question # 11
How many radians are equal to 4 degrees?
Question # 12
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 # 13
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 # 14
If the mass of a ball is 2 kg, then what is its mass on Earth and its weight on moon?
The mass of an object is same everywhere.
Question # 15
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 # 16
We have a kilogram of feathers, a kilogram of tin balls, and a kilogram of tennis balls. Which one of these has greater mass?
All given quantities have same mass (1 kg), no matter what the material is. (correct)
Question # 17
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 # 18
What will be the effect on the centripetal force if the velocity →v of an object of mass m is doubled?
Question # 19
While moving in a circular path, if we increase our speed then we have to bend towards the center of the circular path. Why do we have to bend towards the center?
Question # 20
Which of the soles shown in image will wear out early?
Total Questions
1234567891011121314151617181920
Physics MCQ Test by Topics
- +3.1 Force,Inertia and Momentum
- +3.2 Newton's Laws of Motion
- +3.3 Friction
- +3.4 Uniform Circular Motion
Physics
9th Class Federal MCQ Tests
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Updated on: 06-05-2026
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