Explore Exams
Login Signup
Sign in Open App
CBSE Class 9  >  Class 9 Test  >  : Additional Practice  >  Test: Force and Laws of Motion- Assertion & Reason Type Questions - Class 9 MCQ

Force and Laws of Motion- Assertion & Reason Type Questions - Free


MCQ Practice Test & Solutions: Test: Force and Laws of Motion- Assertion & Reason Type Questions (15 Questions)

You can prepare effectively for Class 9 Class 9: Additional Practice with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Force and Laws of Motion- Assertion & Reason Type Questions". These 15 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: 30 minutes
  • - Number of Questions: 15

Sign up on EduRev for free to attempt this test and track your preparation progress.

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 1
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : If a spring is stretched from one side, the size and shape of the spring changes.

Reason : Unbalanced force acting on the spring changes the size and shape of the spring in the direction of application.

Detailed Solution: Question 1

If a spring is stretched from one side, the size and shape of the spring changes. It is because unbalanced force acting on the spring changes the size and shape of the spring in the direction of application.

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 2
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : A boy facing forward in a moving bus throws a ball straight up. At the same instant the bus begins to accelerate. The ball goes up and falls in front of the boy.

Reason : As the ball rises, velocity remains constant.

Detailed Solution: Question 2

Only the horizontal component of velocity of the ball remains unchanged. When the ball rises the vertical component of velocity keeps on decreasing. During this time the bus accelerates out under the ball. To the boy the ball appears to go over his head. The ball, therefore, falls behind him.

Clear all your doubts with EduRev
Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 3
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : When we stop pedalling a bicycle it slows down.

Reason : Force of friction always acts in the direction of motion.

Detailed Solution: Question 3

When we stop pedalling a bicycle it slows down due to force of friction which acts in the opposite direction of motion.

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 4
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Change in momentum is impulse.

Reason : Impulse is the area between (F-t) graph and time axis.

Detailed Solution: Question 4

The impulse experienced by the object equals the change in momentum of the object. In equation form, F • t = m • Δ v. In a collision, objects experience an impulse; the impulse causes and is equal to the change in momentum.

The area under a force-time graph is force multiplied by time, which is a quantity called impulse. Impulse is equal to the change in momentum of an object.

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 5
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion: If a balanced force is applied on a wooden block it will move.

Reason: Unbalanced force changes the state of motion or rest while balanced force does not.

Detailed Solution: Question 5

Force applied on both the sides of wooden block in equal magnitude reinforces each other. Therefore do not bring about any change in the state of motion or rest of the object. Such types of forces are known as balanced forces.

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 6
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Mass is a measure of inertia of the body in linear motion.

Reason : Greater the mass, greater is the force required to change its state of rest or motion.

Detailed Solution: Question 6

According to Newton’s second law of motion, a = F/m i.e., magnitude of the acceleration produced by a given force is inversely proportional to the mass of the body. Higher is the mass of the body, lesser will be the acceleration produced i.e., mass of the body is a measure of the opposition offered by the body to change a state, when the force is applied i.e., mass of a body is the measure of its inertia.

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 7
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion: A five rupee coin has more inertia than one rupee coin.

Reason: Inertia does not depend upon mass of the object.

Detailed Solution: Question 7

Inertia depends upon the mass of the object. Heavier objects offer more inertia than lighter objects.

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 8
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Force exerted by the ground on the man moves him forward.

Reason : It is a reactional force.

Detailed Solution: Question 8

Force exerted by the ground on the man moves him forward is frictional force. However, it is a reactional force too but the force by which man moves forward is frictional.

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 9
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion: Sudden application of brakes in a moving car may cause injury.

Reason: Inertia is the tendency of an object to keep moving or being at rest undisturbed.

Detailed Solution: Question 9

When we are in a moving car, our body is also moving with the velocity of car. Sudden brake applied stops the car as well as lower body portion while upper body portion is still in motion that causes injury.

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 10
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : A table cloth cannot be pulled from a table without dislodging the dishes.

Reason : Newton’s second law of motion gives definition of inertia

Detailed Solution: Question 10

According to the law of inertia (Newton’s first law), when cloth is pulled from a table, the cloth comes in a state of motion but dishes remain stationary due to inertia. Therefore when we pull the cloth from the table the dishes remain stationary.

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 11
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion: Momentum of an object which is the product of mass and velocity is a vector quantity.

Reason: Momentum has both direction as well as magnitude.

Detailed Solution: Question 11

Momentum of an object which is the product of mass and velocity is a vector quantity. Momentum has both direction as well as magnitude.

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 12
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : When we sit on a chair, our body exerts a force downward and that chair needs to exert an equal force upward or the chair will collapse.

Reason : The third law says that for every action there is an equal and opposite reaction.

Detailed Solution: Question 12

When you sit in your chair, your body exerts a downward force on the chair and the chair exerts an upward force on your body. There are two forces resulting from this interaction - a force on the chair and a force on your body. These two forces are called action and reaction forces.

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 13
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : When astronauts throw something in space, that object would continue moving in the same direction and with the same speed.

Reason : The acceleration of an object produced by a net applied force is directly related to the magnitude of the force, and inversely related to the mass of the object.

Detailed Solution: Question 13

The reason and assertion is correct because the force is applied on the object is directly proportional to the mass of the object

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 14
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : A body is momentarily at rest when it reverses the direction.

Reason : A body cannot have acceleration if its velocity is zero at a given instant of time.

Detailed Solution: Question 14

When a particle is released from rest, υ = 0 but a ≠ 0

Test: Force and Laws of Motion- Assertion & Reason Type Questions - Question 15
Save

Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : From Newton’s second law of motion, impulse is equal to change in momentum.

Reason : Impulse and momentum have different SI units.

Detailed Solution: Question 15

As impulse is equal to change in momentum. Therefore, impulse and momentum have same SI units.

4 docs|108 tests
Join Course
Information about Test: Force and Laws of Motion- Assertion & Reason Type Questions Page
In this test you can find the Exam questions for Test: Force and Laws of Motion- Assertion & Reason Type Questions solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Force and Laws of Motion- Assertion & Reason Type Questions, EduRev gives you an ample number of Online tests for practice
Download as PDF
;

About this Class 9 Practice Test

This test contains 15 MCQs on Force and Laws of Motion- Assertion & Reason Type Questions with detailed solutions for each question. It is part of the Class 9: Additional Practice course on EduRev, designed to align with the current Class 9 syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

Explore more Class 9 Study Resources

If you found this Force and Laws of Motion- Assertion & Reason Type Questions MCQ Test helpful, you can further enhance your Class 9 preparation with in-depth courses on EduRev, for all the subjects and topics available in Class 9: Additional Practice course. The course offers:
  • Video Lectures: covering all the topics of Class 9: Additional Practice
  • Notes for Revision: offering revision notes, important questions, summaries, flashcards, cheatsheets & more for Class 9 preparation
  • MCQ Test: variety of questions as per the pattern of Class 9 exam
Signup on EduRev and stay on top of your study goals
10M+ students crushing their study goals daily