Class 9 Physics Chapter 4 Laws of Motion MCQ with Answers | Complete Quiz
Master Class 9 Physics Chapter 4 Laws of Motion with our comprehensive MCQ quiz designed to strengthen your conceptual understanding. Laws of Motion form the foundation of classical mechanics, explaining how objects move and interact with forces. This complete guide includes topic-wise multiple-choice questions, detailed explanations, and NCERT-aligned answers to help you score confidently in exams. Whether you're preparing for unit tests or board exams, practising these MCQs will boost your problem-solving skills and deepen your grasp of Newton's three laws.
Your child's private AI tutor — trained on NCERT.
3-day free trial · ₹1 to start · Cancel anytime.
Understanding Newton's First Law of Motion
Newton's First Law states that an object at rest remains at rest, and an object in motion remains in motion unless acted upon by an external unbalanced force. This concept introduces the idea of inertia—the natural tendency of objects to resist changes in their state of motion. NCERT Class 9 Physics explains how inertia depends on mass and why seatbelts are essential in vehicles. Understanding this law is crucial for answering MCQs on equilibrium and balanced forces.
Mastering Newton's Second Law and Force Calculation
Newton's Second Law defines the relationship between force, mass, and acceleration: F = ma. This quantitative law is essential for solving numerical MCQs in Chapter 4. The NCERT curriculum emphasizes how acceleration is directly proportional to applied force and inversely proportional to mass. Students must practise problems involving different masses and forces to understand how changes in one variable affect others, a common MCQ pattern.
Newton's Third Law: Action and Reaction Pairs
Newton's Third Law states that for every action, there is an equal and opposite reaction. These forces always act on different objects and never cancel each other. NCERT Class 9 provides real-world examples like swimming, rocket propulsion, and walking to illustrate this concept. MCQs often test whether students can identify correct action-reaction pairs and understand why these forces don't balance despite being equal in magnitude.
Topic-Wise MCQ Breakdown: Force and Motion
Chapter 4 MCQs cover balanced and unbalanced forces, the effect of friction, and momentum concepts. Balanced forces keep an object in equilibrium, while unbalanced forces cause acceleration. The quiz includes questions on how friction opposes motion and affects everyday phenomena. Understanding the distinction between these force types helps answer application-based MCQs correctly and prepares you for conceptual questions in exams.
Why CBSETUTOR.ai Is India's Most Trusted Physics Tutor for Class 9
CBSETUTOR.ai is used by thousands of CBSE families across India for 24x7 AI-powered learning support. Our platform offers personalised MCQ practice, instant doubt resolution, and detailed step-by-step solutions aligned with NCERT 2024-25 curriculum. Students using CBSETUTOR.ai report improved confidence in Laws of Motion, faster problem-solving, and better exam scores. Join India's fastest-growing AI tutor and transform your Physics preparation today.
Common MCQ Patterns and How to Solve Them
Laws of Motion MCQs follow predictable patterns: conceptual questions on the three laws, numerical problems on F=ma, and application-based scenarios. Strategy tips include identifying the reference frame, listing all forces, and checking units carefully. NCERT emphasises real-world contexts like vehicle motion and sports. Practising categorised MCQs helps you recognise patterns, manage exam time, and avoid common mistakes like confusing action-reaction pairs.
Friction, Momentum, and Their Role in Chapter 4
While momentum is formally introduced later, Chapter 4 MCQs often reference it when discussing changing velocities under force. Friction, a resistive force, frequently appears in numerical problems and conceptual questions. NCERT Class 9 explains kinetic and static friction, and how they affect acceleration on inclined planes and horizontal surfaces. Questions about friction helping in motion (like grip on roads) versus hindering it test deeper understanding essential for board exams.
Step-by-Step Solutions to Sample MCQ Questions
Example: A 5 kg object accelerates at 2 m/s² under force F. Find F. Solution: Using F = ma, F = 5 × 2 = 10 N. Another common type: Identifying action-reaction pairs in scenarios. Such guided solutions in our quiz help you understand the problem-solving approach rather than just memorising answers. Each MCQ includes reasoning, making it a learning tool, not just a test. Regular practice with explained answers boosts retention and confidence.
Exam-Ready Preparation: Last-Minute Tips for Laws of Motion
Review the three laws daily for the week before exams. Focus on numerical problems from NCERT textbook examples and practice MCQs covering all difficulty levels. Keep a formula sheet handy: F = ma, friction relationships, and Newton's laws statements. Practise drawing free-body diagrams for complex scenarios. Use online quizzes like ours to identify weak areas. Time yourself while solving MCQs to build exam temperament and manage time effectively during the actual test.
Frequently asked questions
What are Newton's three laws of motion in simple terms?+
Newton's First Law: Objects resist motion changes (inertia). Second Law: Force causes acceleration (F=ma). Third Law: Every action has an equal, opposite reaction. These form the foundation of mechanics in Class 9 Physics.
How many MCQs should I practise daily to master Chapter 4?+
Practise 10-15 MCQs daily for 2-3 weeks before exams. Focus on mixed difficulty levels and different topics. Space out sessions to allow concept consolidation and retain learning better through spaced repetition.
Is CBSETUTOR.ai available for free trial before I subscribe?+
Yes, CBSETUTOR.ai offers a free trial so students can explore our physics quizzes, MCQ solutions, and doubt features before committing. Experience our platform's full functionality and see why thousands of CBSE families trust us.
Does CBSETUTOR.ai provide support in Hindi medium for Laws of Motion?+
Absolutely! CBSETUTOR.ai supports Hindi-medium CBSE students with bilingual content, explanations in Hindi, and MCQs with Hindi language options. Our platform ensures every student, regardless of medium, accesses quality preparation resources.
What is the difference between balanced and unbalanced forces?+
Balanced forces are equal, opposite, and cancel each other—object remains at rest or moves with constant velocity. Unbalanced forces have net value—they cause acceleration. Understanding this distinction is crucial for multiple MCQs in Chapter 4.
How do I identify correct action-reaction pairs in MCQs?+
Action-reaction pairs are forces of the same type, equal in magnitude, opposite in direction, and act on different objects. A common trick: they must involve the same pair of objects. Example: Earth pulls on ball (action), ball pulls on Earth (reaction).
Can I access CBSETUTOR.ai's Physics quizzes on mobile while studying on the go?+
Yes, CBSETUTOR.ai is fully mobile-optimised. Solve MCQs, access explanations, and track progress on your phone anytime, anywhere. Perfect for commute study sessions and quick revision during exam preparation.
What makes solving NCERT examples alongside MCQs more effective?+
NCERT examples teach methodology and problem-solving approach. MCQs test your understanding and speed. Together, they ensure you grasp concepts deeply and can apply them under exam pressure. Our platform integrates both for comprehensive preparation.
Related resources
Class 9 Physics Chapter 7: Motion – Complete Notes, Definitions & ExamplesNCERT Solutions for Class 9 Physics Chapter 9: Gravitation (Complete Guide)Online Class 9 Physics Tutor in Mumbai — 24/7 AI Coaching at ₹9,999/MonthNCERT Solutions for Class 9 Physics Chapter 7: Motion – Complete Solved GuideNCERT Solutions for Class 9 Physics Chapter 8: Force and Laws of MotionClass 9 Physics Chapter 8: Force and Laws of Motion – Complete Notes & Revision GuideOnline Class 9 Physics Tutor in Delhi — 24/7 AI Coaching for CBSE Board SuccessClass 9 Mathematics Chapter 1: Orienting Yourself – The Use of Coordinates MCQ Quiz with Answers
Keep learning — related guides
Sanskrit
Class 9 Sanskrit Chapter 12 वाङ्गमयं तपः: 30 MCQ Questions with Answers & Explanations
Sanskrit
Class 9 Sanskrit Chapter 11 पर्यावरणम् MCQ Quiz – 30 Questions with Answers
Sanskrit
Class 9 Sanskrit Chapter 10 जटायोः शौर्यम् MCQ Quiz – 30 Questions with Answers & Explanations
Sanskrit
Class 9 Sanskrit Chapter 9 सिकतासेतुः MCQ Quiz with Answers (2024–25 CBSE Syllabus)
Sanskrit
Class 9 Sanskrit Chapter 8 लौहतुला: 30 MCQs with Answers & Explanations
Sanskrit
Class 9 Sanskrit Chapter 7 प्रत्यभिज्ञानम् MCQ Quiz – 30 Questions with Answers
Ready to give your Class 9 child the tutor that never sleeps?
CBSETUTOR.ai covers every chapter in the Class 9 NCERT syllabus — Maths, Science, Social Science, English, Hindi and more. 24×7. Patient. Unlimited. 3-day free trial.
Start your child's 3-day free trial →