SEBA Class 9 Science Chapter 9 Force and Laws of Motion MCQs (2026–27) – Assam Eduverse
Strengthen your understanding of mechanics with SEBA Class 9 Science Chapter 9 Force and Laws of Motion MCQs (2026–27), developed according to the latest ASSEB syllabus and current board exam pattern. These SEBA Class 9 Science Chapter 9 Force and Laws of Motion MCQs include conceptual objective questions, numerical-based MCQs, and application-focused sets to support effective exam preparation.
Prepared by Assam Eduverse subject experts, these SEBA Class 9 Science Chapter 9 MCQs cover important topics such as balanced and unbalanced forces, Newton’s laws of motion, inertia, momentum, conservation of momentum, and real-life applications of force. Practicing these Force and Laws of Motion MCQs Class 9 SEBA and Assam Board Class 9 Science objective questions helps improve conceptual clarity and numerical accuracy. You can also explore more practice from Class 9 Science chapterwise MCQs and SEBA Class 9 MCQs.
Consistent revision of these ASSEB Class 9 Science Important MCQs will boost confidence and exam performance. For detailed explanations, visit SEBA Class 9 Science Chapter 9 Force and Laws of Motion Solutions, or explore additional resources like SEBA Class 9 & 10 study materials and SEBA Class 9 syllabus.
SEBA Class 9 Science Chapter 9 Force and Laws of Motion MCQs – ASSEB 2026–27 Board Exam Practice
Table of Contents
Q1. Which of the following can change the state of motion of an object?
a) Temperature
b) Force
c) Light
d) Mass
Answer: b) Force
Q2. When two equal forces act on an object in opposite directions, the object will:
a) Move in the direction of greater force
b) Move in the direction of smaller force
c) Remain at rest or continue in uniform motion
d) Accelerate
Answer: c) Remain at rest or continue in uniform motion
Q3. Friction force always acts:
a) In the direction of motion
b) Opposite to the direction of motion
c) Perpendicular to motion
d) Upward
Answer: b) Opposite to the direction of motion
Q4. An object at rest will remain at rest unless acted upon by:
a) Balanced force
b) Internal force
c) Unbalanced external force
d) Magnetic force
Answer: c) Unbalanced external force
Q5. The tendency of an object to resist change in its state of motion is called:
a) Momentum
b) Inertia
c) Acceleration
d) Velocity
Answer: b) Inertia
Q6. The SI unit of force is:
a) kg m s⁻¹
b) kg m s⁻²
c) m s⁻²
d) Newton second
Answer: b) kg m s⁻²
Q7. The SI unit of momentum is:
a) kg m s⁻¹
b) kg m s⁻²
c) Newton
d) Joule
Answer: a) kg m s⁻¹
Q8. Momentum is defined as:
a) Force × time
b) Mass × acceleration
c) Mass × velocity
d) Velocity × time
Answer: c) Mass × velocity
Q9. If no external unbalanced force acts on a system, its total momentum:
a) Decreases
b) Increases
c) Remains conserved
d) Becomes zero
Answer: c) Remains conserved
Q10. The second law of motion relates force with:
a) Velocity
b) Acceleration
c) Momentum
d) Mass and acceleration
Answer: d) Mass and acceleration
Q11. A force of 1 newton produces an acceleration of 1 m s⁻² in a body of mass:
a) 10 kg
b) 1 kg
c) 100 g
d) 5 kg
Answer: b) 1 kg
Q12. When a bus suddenly stops, passengers fall forward due to:
a) Friction
b) Gravity
c) Inertia
d) Acceleration
Answer: c) Inertia
Q13. If mass is doubled and acceleration remains same, force will:
a) Remain same
b) Become half
c) Double
d) Become zero
Answer: c) Double
Q14. A moving truck is more dangerous than a parked truck because it has greater:
a) Friction
b) Inertia
c) Momentum
d) Acceleration
Answer: c) Momentum
Q15. Action and reaction forces act on:
a) Same object
b) Different objects
c) Same body at different times
d) Same direction
Answer: b) Different objects
Q16. When a gun is fired, it recoils due to:
a) First law
b) Second law
c) Third law
d) Law of gravitation
Answer: c) Third law
Q17. The rate of change of momentum is equal to:
a) Velocity
b) Acceleration
c) Force
d) Inertia
Answer: c) Force
Q18. Heavier objects have:
a) Less inertia
b) More inertia
c) Same inertia
d) No inertia
Answer: b) More inertia
Q19. When a balloon releases air and moves forward, it demonstrates:
a) First law
b) Second law
c) Third law
d) Friction
Answer: c) Third law
Q20. The equation F = ma represents:
a) First law
b) Second law
c) Third law
d) Law of conservation of energy
Answer: b) Second law
Q21. Assertion: A moving object continues to move with uniform velocity if no unbalanced force acts on it.
Reason: According to Newton’s first law, an object resists change in its state of motion.
a) Both A and R are true and R is correct explanation of A
b) Both A and R are true but R is not correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is correct explanation of A
Q22. Assertion: A cricket player pulls his hands backward while catching the ball.
Reason: Increasing time of stopping reduces the force applied.
a) Both A and R are true and R is correct explanation
b) Both A and R are true but R is not correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is correct explanation
Q23. Assertion: The recoil velocity of a gun is small compared to the velocity of bullet.
Reason: The mass of the gun is much larger than the mass of the bullet.
a) Both A and R are true and R is correct explanation
b) Both A and R are true but R is not correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is correct explanation
Q24. Assertion: Inertia depends on mass.
Reason: Mass is the measure of inertia.
a) Both A and R are true and R is correct explanation
b) Both A and R are true but R is not correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is correct explanation
Q25. Assertion: When two bodies collide without external force, total momentum remains constant.
Reason: Momentum is conserved in an isolated system.
a) Both A and R are true and R is correct explanation
b) Both A and R are true but R is not correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is correct explanation
Q26. Assertion: When a bus suddenly starts, passengers fall backward.
Reason: The lower part of the body moves with the bus but the upper part tends to remain at rest due to inertia.
a) Both A and R are true and R is correct explanation of A
b) Both A and R are true but R is not correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is correct explanation of A
Q27. Assertion: A balanced force can change the speed of an object.
Reason: Balanced forces result in zero net force.
a) Both A and R are true and R is correct explanation
b) Both A and R are true but R is not correct explanation
c) A is false but R is true
d) A is true but R is false
Answer: c) A is false but R is true
Q28. Assertion: Momentum has direction.
Reason: Momentum depends only on mass.
a) Both A and R are true and R is correct explanation
b) Both A and R are true but R is not correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: c) A is true but R is false
Q29. Assertion: If no external force acts on two colliding bodies, their total momentum after collision equals total momentum before collision.
Reason: According to Newton’s third law, action and reaction forces are equal and opposite.
a) Both A and R are true and R is correct explanation
b) Both A and R are true but R is not correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is correct explanation
Q30. Assertion: A force of 10 N acting on 2 kg mass produces 5 m s⁻² acceleration.
Reason: According to second law, F = ma.
a) Both A and R are true and R is correct explanation
b) Both A and R are true but R is not correct explanation
c) A is true but R is false
d) A is false but R is true
Answer: a) Both A and R are true and R is correct explanation
Q31. What is the momentum of a 5 kg object moving with velocity 4 m s⁻¹?
a) 9 kg m s⁻¹
b) 20 kg m s⁻¹
c) 1.25 kg m s⁻¹
d) 5 kg m s⁻¹
Answer: b) 20 kg m s⁻¹
Q32. A force of 15 N acts on a body of mass 3 kg. What is the acceleration?
a) 3 m s⁻²
b) 5 m s⁻²
c) 45 m s⁻²
d) 0.2 m s⁻²
Answer: b) 5 m s⁻²
Q33. A 2 kg object initially at rest is given an acceleration of 3 m s⁻². What is the force applied?
a) 6 N
b) 5 N
c) 1.5 N
d) 3 N
Answer: a) 6 N
Q34. If velocity changes from 2 m s⁻¹ to 8 m s⁻¹ in 3 s, acceleration is:
a) 2 m s⁻²
b) 3 m s⁻²
c) 6 m s⁻²
d) 18 m s⁻²
Answer: a) 2 m s⁻²
Q35. A body of mass 4 kg moving at 5 m s⁻¹ has momentum:
a) 9 kg m s⁻¹
b) 20 kg m s⁻¹
c) 1.25 kg m s⁻¹
d) 4 kg m s⁻¹
Answer: b) 20 kg m s⁻¹
Q36. If a 10 kg body experiences acceleration of 2 m s⁻², force is:
a) 5 N
b) 20 N
c) 12 N
d) 8 N
Answer: b) 20 N
Q37. Two bodies of equal mass move with same speed in opposite directions. Their total momentum is:
a) Zero
b) Double
c) Half
d) Maximum
Answer: a) Zero
Q38. If mass is constant and velocity becomes zero, momentum becomes:
a) Same
b) Double
c) Zero
d) Maximum
Answer: c) Zero
Q39. A 1000 kg car moving at 10 m s⁻¹ has momentum:
a) 100 kg m s⁻¹
b) 1000 kg m s⁻¹
c) 10000 kg m s⁻¹
d) 10 kg m s⁻¹
Answer: c) 10000 kg m s⁻¹
Q40. If no unbalanced force acts on a moving object, it will:
a) Stop immediately
b) Accelerate
c) Continue with uniform velocity
d) Move in circle
Answer: c) Continue with uniform velocity
Q41. Match the following:
| Column A | Column B |
|---|---|
| A. Inertia | 1. Opposes motion |
| B. Momentum | 2. Product of mass and velocity |
| C. Force | 3. Resistance to change in motion |
| D. Friction | 4. Causes acceleration |
a) A-3, B-2, C-4, D-1
b) A-2, B-3, C-1, D-4
c) A-1, B-4, C-2, D-3
d) A-3, B-4, C-2, D-1
Answer: a) A-3, B-2, C-4, D-1
Q42. Match the following:
| Column A | Column B |
|---|---|
| A. First Law | 1. F = ma |
| B. Second Law | 2. Action–Reaction |
| C. Third Law | 3. Law of inertia |
| D. Conservation of Momentum | 4. Total momentum remains constant |
a) A-3, B-1, C-2, D-4
b) A-1, B-2, C-3, D-4
c) A-4, B-3, C-1, D-2
d) A-2, B-4, C-1, D-3
Answer: a) A-3, B-1, C-2, D-4
Q43. Match the following:
| Column A | Column B |
|---|---|
| A. kg m s⁻² | 1. Mass |
| B. kg m s⁻¹ | 2. Acceleration |
| C. m s⁻² | 3. Momentum |
| D. kg | 4. Force |
a) A-4, B-3, C-2, D-1
b) A-3, B-4, C-1, D-2
c) A-2, B-1, C-4, D-3
d) A-1, B-2, C-3, D-4
Answer: a) A-4, B-3, C-2, D-1
Q44. Match the following:
| Column A | Column B |
|---|---|
| A. Gun recoil | 1. Inertia |
| B. Falling passenger forward | 2. Third law |
| C. Catching ball with backward motion | 3. Increasing time reduces force |
| D. Balloon moving forward | 4. Action–reaction |
a) A-2, B-1, C-3, D-4
b) A-1, B-2, C-4, D-3
c) A-3, B-4, C-2, D-1
d) A-4, B-3, C-1, D-2
Answer: a) A-2, B-1, C-3, D-4
Q45. Match the following:
| Column A | Column B |
|---|---|
| A. Heavy object | 1. Produces acceleration |
| B. Balanced forces | 2. More inertia |
| C. Unbalanced force | 3. No change in motion |
| D. Isolated system | 4. Momentum conserved |
a) A-2, B-3, C-1, D-4
b) A-3, B-2, C-4, D-1
c) A-4, B-1, C-3, D-2
d) A-1, B-4, C-2, D-3
Answer: a) A-2, B-3, C-1, D-4
Q46. Match the following:
| Column A | Column B |
|---|---|
| A. Rate of change of momentum | 1. F |
| B. mv | 2. Momentum |
| C. 1 Newton | 3. 1 kg × 1 m s⁻² |
| D. Inertia | 4. Resistance to change |
a) A-1, B-2, C-3, D-4
b) A-2, B-3, C-4, D-1
c) A-3, B-4, C-1, D-2
d) A-4, B-1, C-2, D-3
Answer: a) A-1, B-2, C-3, D-4
Q47. Match the following:
| Column A | Column B |
|---|---|
| A. F = ma | 1. Second law |
| B. p = mv | 2. Momentum |
| C. No net force | 3. First law |
| D. Action and reaction | 4. Third law |
a) A-1, B-2, C-3, D-4
b) A-3, B-4, C-1, D-2
c) A-4, B-1, C-2, D-3
d) A-2, B-3, C-4, D-1
Answer: a) A-1, B-2, C-3, D-4
Q48. Match the following:
| Column A | Column B |
|---|---|
| A. Velocity zero | 1. Acceleration increases |
| B. Mass increases | 2. Momentum zero |
| C. Force increases | 3. Inertia increases |
| D. Time of impact increases | 4. Force decreases |
a) A-2, B-3, C-1, D-4
b) A-3, B-2, C-4, D-1
c) A-1, B-4, C-2, D-3
d) A-4, B-1, C-3, D-2
Answer: a) A-2, B-3, C-1, D-4
Q49. Match the following:
| Column A | Column B |
|---|---|
| A. Friction | 1. Momentum change |
| B. Brake applied | 2. Opposes motion |
| C. Collision | 3. Third law |
| D. Recoil | 4. Acceleration opposite direction |
a) A-2, B-4, C-1, D-3
b) A-1, B-2, C-3, D-4
c) A-3, B-1, C-2, D-4
d) A-4, B-3, C-1, D-2
Answer: a) A-2, B-4, C-1, D-3
Q50. Match the following:
| Column A | Column B |
|---|---|
| A. kg | 1. Force |
| B. Newton | 2. Mass |
| C. kg m s⁻¹ | 3. Momentum |
| D. m s⁻² | 4. Acceleration |
a) A-2, B-1, C-3, D-4
b) A-1, B-2, C-4, D-3
c) A-3, B-4, C-1, D-2
d) A-4, B-3, C-2, D-1
Answer: a) A-2, B-1, C-3, D-4
SEBA Class 9 Science Chapter 9 Force and Laws of Motion MCQs – Important Objective Questions
A strong understanding of Force and Laws of Motion is essential for mastering the fundamentals of Physics. Regular practice of well-structured MCQs based on the latest SEBA (ASSEB) syllabus helps students build conceptual clarity and become familiar with the types of objective and numerical questions asked in examinations.
These SEBA Class 9 Science Chapter 9 MCQs cover important topics such as inertia, momentum, Newton’s laws of motion, the relation F = ma, action and reaction forces, and the principle of conservation of momentum. Since this chapter involves both theoretical understanding and numerical application, consistent practice is key to improving accuracy and confidence.
By solving these important objective questions for Class 9 Science, students can enhance their ability to apply formulas correctly, interpret physical situations, and solve numerical problems efficiently. It also helps in avoiding common mistakes related to sign conventions, units, and conceptual differences between force-related quantities.
Consistent MCQ practice improves speed, precision, and confidence. Students become more comfortable with exam patterns, manage time effectively, and can revise the chapter quickly before tests or final examinations.
To perform well in school assessments and board-level exams, students should make these MCQs a regular part of their study routine. With continuous practice and a clear understanding of concepts, scoring high in this chapter becomes much more achievable and less stressful.
FAQs – SEBA Class 9 Science Chapter 9 Force and Laws of Motion MCQs
1. How many MCQs come from Force and Laws of Motion in SEBA Class 9 exam?
About 4–5 MCQs usually come from this chapter. Focus on laws, numericals, and formulas to score easy marks quickly.
2. What are the most important MCQs from Chapter 9 Force and Laws of Motion?
Important MCQs focus on Newton’s laws, inertia, momentum, and numericals. Practice chapter-wise questions from Assam Eduverse for better exam confidence.
3. Is Force and Laws of Motion a difficult chapter for SEBA Class 9 students?
No, it’s easy if you understand concepts and practice numericals. Start with formulas, then solve MCQs regularly to build confidence.
4. Where can I download SEBA Class 9 Force and Laws of Motion MCQs with answers?
You can download chapter-wise MCQs PDFs from trusted sites like Assam Eduverse. Always revise solved examples before attempting MCQs.
5. Do numericals come in MCQs from Force and Laws of Motion?
Yes, simple numericals based on F=ma and momentum appear in MCQs. Practice basic calculations to avoid mistakes in the exam.
6. How to prepare quickly for Force and Laws of Motion MCQs before exam?
Revise formulas, practice previous MCQs, and focus on concepts like inertia and action-reaction. Solve at least 40–50 MCQs before exams.
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