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Last Updated on August 9, 2024 by XAM CONTENT
Hello students, we are providing case study questions for class 9 science. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class 9 science. In this article, you will find case study questions for cbse class 9 science chapter 8 Force and Laws of Motion.
| Chapter | Force and Laws of Motion |
| Type of Questions | Case Study Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 9 |
| Subject | Science |
| Theme | Moving Things, People and Ideas |
| Useful for | Class 9 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 9 Science Chapterwise Case Study |
Table of Contents
Case Study Questions on Force and Laws of Motion
Questions
Question 1:
Varshney Sir was demonstrating an experiment in his class with the setup as shown in the figure below.
(a)
(b)
A five-rupee coin is set on a stiff card covering an empty glass tumbler standing on a table. He then flicks the card hard with his fingers.
Read the given passage carefully and give the answer of the following questions:
Q. 1. Give reason for the above observation.
a. The coin possesses inertia of rest, it resists the change and hence falls in the glass.
b. The coin possesses inertia of motion, it resists the change and hence falls in the glass.
c. The coin possesses inertia of rest, it accepts the change and hence falls in the glass.
d. The coin possesses inertia of motion, it accepts the change and hence falls in the glass.
Difficulty Level: Medium
Q. 2. Name the law involved in this case.
a. Newton’s second law of motion
b. Newton’s first law of motion
c. Newton’s third law of motion
d. Law of conservation of energy
Difficulty Level: Easy
Q. 3. If the above coin is replaced by a heavy ten rupee coin, what will be your observation? Give reason.
a. Heavy coin will possess more inertia and lesser force is required to perform the activity.
b. Heavy coin will possess less inertia and more force is required to perform the activity.
c. Heavy coin will possess more inertia and more force is required to perform the activity.
d. Heavy coin will possess less inertia and lesser force is required to perform the activity.
Difficulty Level: Medium
Q. 4. Complete the statement of the first law of motion:
‘A body at rest stays at and a body in motion stays in unless an ___________ is applied’.
a. motion; rest; external force
b. rest; motion; external force
c. rest; motion; internal force
d. None of the above
Difficulty Level: Easy
Q. 5. Observe the diagram carefully. A car braked suddenly near a cliff. Explain the motion of the driver.
a. The driver is pushed backwards.
b. Due to inertia of motion, driver was thrown forward as he continues to be in motion in the forward direction.
c. Due to inertia of rest, the road is left behind and the driver reaches forward.
d. Due to inertia of motion, the driver moved in the backward direction.
Difficulty Level: Medium
Answers
- (a) The coin possesses inertia of rest, it resists the change and hence falls in the glass.
- (b) Newton’s first law of motion
- (c) Heavy coin will possess more inertia and more force is required to perform the activity.
- (b) rest; motion; external force
- (b) Due to inertia of motion, driver was thrown forward as he continues to be in motion in the forward direction.
Question 2:
If the resultant of all the forces acting on a body is zero, the forces are called balanced forces. A body under the action of balanced forces does not change its position of rest (or of uniform motion) and it appears as if no force is acting on it. They can, however, change the shape of the body.
On the other hand, if the resultant of all the forces acting on a body is not zero, the forces are called unbalanced forces. When unbalanced forces act on a body, they produce a change in its state of rest or of uniform motion.
Read the given passage carefully and give the answer to the following questions:
Q 1. Mark the incorrect option:
a. Balanced forces cannot set any stationary body into motion.
b. Balanced forces cannot change the speed of a moving body.
c. Balanced forces can change the shape and size of a body.
d. None of the above
Difficulty Level: Medium
Q 2. Which is correct for unbalanced forces?
a. When unbalanced forces act on an object at rest, the object will move.
b. Unbalanced forces are necessary to cause a non-moving object to start moving.
c. Unbalanced forces produces change in motion (acceleration).
d. All of the above
Difficulty Level: Medium
Q 3. If the force acting on an object are balanced, then the object:
a. must be at rest
b. must be moving
c. must not be accelerating
d. must lose energy
Difficulty Level: Easy
Q 4. A batsman hits a sweep short in the game of cricket. What is the nature of force experienced by the ball during the impact?
a. Balanced force
b. Unbalanced force
c. Both balanced and unbalanced forces
d. Neither balanced nor unbalanced forces
Difficulty Level: Easy
Answers
- (d) None of the above
- (d) All of the above
- (c) must not be accelerating
- (b) Unbalanced force
Also check
Case study questions for other chapters of class 9 science is given below.
- Force and Laws of Motion Class 9 Case Study Questions Science Chapter 8
- Motion Class 9 Case Study Questions Science Chapter 7
- Tissues Class 9 Case Study Questions Science Chapter 6
- The Fundamental Unit of Life Class 9 Case Study Questions Science Chapter 5
- Is Matter Around Us Pure Class 9 Case Study Questions Science Chapter 2
- Matter in Our Surroundings Class 9 Case Study Questions Science Chapter 1
We hope the given case study questions for Force and Laws of Motion Class 9 helps you in your learning.
Helpful Links for CBSE Class 9 Science Preparation
- Chapter Tests for CBSE Class 9 Science
- Worksheets for CBSE Class 9 Science
- 100 Important Numerical Problems for CBSE Class 9 Physics
- 65 Important Case Study Questions for CBSE Class 9 Science
Topics from which case study questions may be asked
- Force and Motion
- Newton’s Laws of Motion
- Action and Reaction forces
- Inertia of a body
- Inertia and mass
- Momentum
- Force and Acceleration
- Elementary idea of conservation of Momentum.
Force may be defined as a push or pull that changes or tends to change the state of rest or of uniform motion, direction of motion, or the shape and size of the body. Force is a vector quantity and has both magnitude as well as direction. The SI unit of force is newton (symbol N). It must be remembered that forces do not always make an object move.
The point on a body where a force acts is known as the point of application of force. The line drawn through the point of application of force along the direction of the force is known as the line of action of force.
Rest: A body is said to be in the state of rest when its position does not change with respect to a reference point, e.g., tree, building, etc.
Momentum is the property of a body by virtue of its mass and velocity. It is defined as the product of the mass of a body and its velocity. It is a vector quantity.
For further practice on case study questions related to Force and Laws of Motion Class 9 Science, we recommend exploring the link given below.
Quiz
| Topic | Force and Laws of Motion |
| Useful for | CBSE Class 9 Students |
| Type of Questions | MCQs |
| No. of Questions | 35 |
| Solutions | Instant Solutions after Completion of Quiz |
| Quiz Link | Click here to Take Test |
| Price | Free |
How to take quiz or test using the given link
It’s quite simple!
Step 1: Click on the given link. You will see the below screen.
Step 2: Fill in the necessary details. There is no need to register. Just fill your email and name and click on the button “Take Assessment”. The below screen will appear.
Step 3: Click on start assessment. Now you are ready to take test.
Frequently Asked Questions (FAQs) on Force and Laws of Motion Case Study Questions
Q1: What are case study questions for CBSE examinations?
A1: Case study questions in CBSE examinations typically involve scenarios or real-life examples, requiring students to apply their understanding of concepts to solve problems or analyze situations.
Q2: Why are case study questions important for understanding class 9 science chapters?
A2: Case study questions provide a practical context for students to apply theoretical knowledge to real-world situations, fostering deeper understanding and critical thinking skills.
Q3: How should students approach answering case study questions for CBSE?
A3: Students should carefully read the case study, identify the key issues or problems presented, analyze the information provided, apply relevant concepts and principles of chemical reactions and equations, and formulate well-supported solutions or responses.
Q4: Are there any resources available online for students to practice case study questions on class 9 science chapters for CBSE exams?
A4: Yes, several educational websites offer case study questions for CBSE students preparing for science examinations. We also offer a collection of case study questions for all classes and subject on our website.Visit ourwebsiteto access these questions and enhance your learning experience. If you need more case study questions for your preparation, then you visit Physics Gurukul website.
Q5: How can students effectively prepare for case study questions on “Force and Laws of Motion” for CBSE exams?
A5: Effective preparation strategies include regular revision of concepts, solving practice questions, analyzing case studies from previous exams, seeking clarification on doubts, and consulting with teachers or peers for guidance and support.
Q6: How can teachers incorporate case study questions on “Force and Laws of Motion” class 9 science into classroom teaching?
A6: Teachers can integrate case studies into lesson plans, group discussions, or interactive activities to engage students in active learning, promote problem-solving skills, and facilitate a deeper understanding of “Force and Laws of Motion”.
Q7: When a force is applied to a body, what are the two essential effects it can produce?
A7: When a force is applied to a body, it can essentially have two effects:
(a) it can bring about a change in the state of motion of a body or
(b) it can deform a body i.e. it can change its shape.
Q8: Define 1 N.
A8: Newton is defined as that force which when applied to a mass of 1 kg produces an acceleration of 1 ms–2.
Q9: What do you mean by a resultant force?
A9: When two or more forces act on a body simultaneously, then the single force which produces the same effect as
produced by all the forces acting together is known as the resultant force.
Q10: Why do we beat a carpet with a stick to remove dust particles?
A10: When the carpet is beaten, it is suddenly set into motion. The dust particles tend to remain at rest due to the inertia of rest, therefore, fall off.
Q11: Why does a rolling ball stop after some time?
A11: It is due to the opposing forces of air resistance and friction between the ball and the ground.
Q12: A person carelessly getting down from a moving bus falls forward. Why?
A12: It is because the feet come to rest suddenly but the upper part of his body retains the forward direction speed.
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