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Forces and Laws of Motion

NCERT Class 9 Science – Force and Laws of Motion: Extended Multiple Choice Questions

NCERT Class 9 Science – Force and Laws of Motion: Extended Multiple Choice Questions

1. Which of Newton’s laws is also known as the law of inertia?





2. What does Newton’s Second Law relate to?





3. What is the formula for calculating weight?





4. What type of friction occurs between stationary objects?





5. Which law can be demonstrated using a rocket?





6. What is the SI unit of force?





7. Which of the following is an example of balanced forces?





8. What is the momentum of an object with mass 2 kg moving at a velocity of 5 m/s?





9. According to Newton’s Third Law, action and reaction forces are:





10. What is the acceleration of an object with mass 5 kg when a force of 10 N is applied to it?





11. Which of the following is NOT a contact force?





12. What happens to the acceleration of an object if the force applied to it is doubled and its mass is halved?





13. Which of the following is an example of inertia?





14. What is the relationship between mass and inertia?





15. In the equation F = ma, what does ‘a’ represent?





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