Class 11 Physics — Chapter 5: Laws of Motion Online Test

1. What formula describes the relationship between power, work, and time?

2. A 2 kg block is initially at rest on a horizontal frictionless surface. If a horizontal force of 10 N is applied to the block, what is its velocity after 4 seconds?

3. A crate of mass 50 kg is pushed along a rough horizontal surface with a force of 200 N. If the coefficient of kinetic friction between the crate and the surface is 0.4, what is the acceleration of the crate?

4. What is an example of non-uniform circular motion?

5. What is the direction of centripetal force?

6. What is the relationship between centripetal force and centripetal acceleration?

7. When a force is applied to an object, what happens to the object's momentum?

8. Which statement correctly compares the magnitudes of static frictional force and kinetic frictional force between two surfaces?

9. What type of frictional force acts between two surfaces that are sliding past each other?

10. In a dynamic equilibrium situation, what happens if the forces acting on an object are not balanced?

11. In which of the following scenarios is an object in rotational equilibrium?

12. In a collision between a truck and a bicycle, which of the following statements is true about the total momentum before and after the collision?

13. When a person jumps off a boat into the water, how does the boat react according to the principle of conservation of linear momentum?

14. When a bird flies by flapping its wings, according to Newton's third law, what is the reaction force to the bird's wing movement?

15. When a person jumps off a boat onto a dock, according to Newton's third law, what is the reaction force to the person's jump?

16. What is the relationship between Newton and pound-force?

17. How did Aristotle's ideas influence Islamic scholars such as Ibn Sina (Avicenna) and Ibn Rushd (Averroes)?

18. According to Newton's first law of motion, what role does inertia play?

19. Why does a book placed on a table remain at rest until someone moves it?

20. Why does a ball thrown inside a moving train follow a curved path to an observer on the ground?

1. Why does a cyclist lean inwards while turning on a curved path?

2. What property of an object does momentum depend on?

3. How does Newton's second law relate to the concept of inertia?

4. What is the SI unit of momentum?

5. Which formula describes the relationship between angular velocity, linear velocity, and radius of rotation?

6. If the mass of an object doubles and its velocity remains unchanged, how does its momentum change?

7. What is the direction of tension force in a taut rope or string?

8. When a soccer player kicks a ball, according to Newton's third law, what is the reaction force to the player's kick?

9. According to Newton's first law of motion, what happens to an object in motion when no external forces act upon it?

10. Why does a ball thrown inside a moving train follow a curved path to an observer on the ground?

11. Which law of motion is crucial in understanding the forces acting on vehicles during acceleration and braking?

12. What does Newton's first law of motion state regarding inertia?

13. When a rocket accelerates upwards, according to Newton's third law, the rocket pushes against the exhaust gases and the exhaust gases push ________.

14. How does the direction of applied force affect the motion of an object?

15. In Newton's third law, what is meant by "equal and opposite" forces?

16. What is the formula for the period of a mass-spring system with spring constant and mass ?

17. What is the direction of spring force when a spring is compressed?

18. When a car travels at a constant speed along a straight road, what type of equilibrium does it maintain?

19. Which formula describes the relationship between the focal length of a lens, its refractive index , and the radius of curvature ?

20. Which law of motion states that forces always occur in pairs and act on different objects simultaneously?

21. Which of the following best represents Newton's first law of motion?

22. In which situation would tension force be zero?

23. A 2 kg block is initially at rest on a horizontal frictionless surface. If a horizontal force of 10 N is applied to the block, what is its velocity after 4 seconds?

24. Which law of motion explains why a rocket moves upwards when gases are expelled downwards?

25. What is the formula for the moment of inertia of a thin rod of length and mass rotating about an axis perpendicular to its length and passing through its center?

26. Why does a cyclist need to pedal continuously to keep moving at a constant speed on a flat road?

27. If a force of 20 N is applied to an object with an acceleration of 4 m/s², what is the mass of the object?

28. If an object of mass 5 kg experiences an acceleration of 2 m/s², what is the magnitude of the force acting on it?

29. What does represent in Newton's laws of motion?

30. Why do civil engineers analyze the equilibrium of soil and foundations before constructing buildings?

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

2. Why do mechanical engineers analyze equilibrium principles in designing suspension bridges?

3. Which of the following statements about inertia is true?

4. Which of the following statements best describes Galileo's contribution to the concept of inertia?

5. Why is it challenging to observe true inertial frames of reference on Earth?

6. Why does a block placed on a flat surface remain stationary?

7. Which formula describes the relationship between the moment of inertia , mass , and radius of gyration of a body?

8. Which formula represents the period of a pendulum?

9. Which law of motion describes the relationship between action and reaction forces?

10. What principle does Newton's second law extend from Newton's first law?

11. How did Aristotle's ideas on motion impact early European universities?

12. Which physical quantity determines the magnitude of centripetal force in circular motion?

13. Which law of motion is crucial in understanding the principles behind rocket propulsion?

14. Which of the following pairs would experience the strongest gravitational force between them?

15. Why is the equation F = ma considered a fundamental principle in physics?

16. What is the formula for the gravitational potential energy of an object of mass at height above the Earth's surface?

17. What type of force is responsible for maintaining circular motion?

18. Why does a heavier object require more force to accelerate at the same rate as a lighter object?

19. What is an example of non-uniform circular motion?

20. When a baseball player catches a ball, why does the player's body move backward?

21. In which scenario is a body in unstable equilibrium?

22. What happens to the acceleration of an object if the force acting on it is increased while its mass remains constant?

23. Which law of motion is also known as the law of inertia?

24. How does the direction of applied force affect the motion of an object?

25. What is the formula for kinetic energy of an object with mass moving at velocity ?

26. In a collision between a truck and a bicycle, which of the following statements is true about the total momentum before and after the collision?

27. What is the formula for the power dissipated in an electrical resistor carrying current ?

28. Which step involves choosing an appropriate coordinate system in mechanics problem-solving?

29. How does mass relate to the concept of inertia?

30. How does a gymnast on a balance beam maintain equilibrium during a routine?

31. When a bullet is fired from a rifle, according to conservation of linear momentum, how does the rifle recoil?

32. What is the formula for the period of a simple pendulum of length swinging with small angles?

33. Which physical quantity is conserved in uniform circular motion?

34. When a rocket engine ejects exhaust gases downwards, according to Newton's third law, what is the reaction force to the downward ejection?

35. A 0.5 kg ball is thrown vertically upwards with an initial velocity of 10 m/s. What is the maximum height reached by the ball? (Assume g = 10 m/s²)

36. Which law of motion describes the effect of applied force on an object's motion?

37. Which law of motion is crucial in understanding the forces acting on vehicles during acceleration and braking?

38. In a spring-mass system, what determines the acceleration of the mass?

39. Which physical quantity is represented by 'a' in the equation F = ma?

40. Which formula represents the relationship between the electric field between the plates of a parallel plate capacitor, the charge on the plates, and the distance between them?

41. Which formula describes the relationship between impulse , force , and time over which the force acts?

42. When a person jumps off a boat onto a dock, according to Newton's third law, what is the reaction force to the person's jump?

43. Which force is used to simulate artificial gravity in rotating spacecraft?

44. What is the purpose of drawing a free-body diagram in mechanics problems?

45. How does tension force change in a rope carrying a load when the rope is at rest?

46. What is the formula for the electric field created by a point charge at a distance from it?

47. What happens if the radius of the circular path decreases in circular motion?

48. What causes a pendulum to swing back and forth without external force?

49. What concept explains why a tennis ball thrown vertically into the air eventually falls back to the ground?

50. When a car travels at a constant speed along a straight road, what type of equilibrium does it maintain?