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

2. At what point does spring force become zero?

3. If an object's velocity is doubled and its mass remains unchanged, how does its momentum change?

4. What is the formula for the escape velocity required for an object of mass to escape the gravitational pull of a celestial body of mass and radius ?

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

6. Why does a paper airplane gradually slow down and fall to the ground after being thrown?

7. Which force allows a tree branch to bend and sway in the wind?

8. Which formula represents the relationship between the critical angle for total internal reflection, refractive index of the medium, and incident medium?

9. How do Newton's laws of motion contribute to understanding the dynamics of fluids?

10. A rocket of mass 1000 kg is accelerating upwards at 20 m/s². What is the force exerted by its engines?

11. What is the direction of centripetal force?

12. How do physicists use equilibrium principles in analyzing the stability of satellites in orbit?

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

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

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

16. Which unit is commonly used to measure small forces, such as those in microscopic or atomic scales?

17. An object of mass 5 kg is moving with a constant velocity of 10 m/s. What is the net force acting on the object?

18. What happens to the motion of an object when an applied force is greater than opposing forces like friction?

19. Which force is responsible for the feeling of being pushed outward in a rotating vehicle?

20. Which of Galileo's works discussed his experiments with inclined planes and the concept of inertia?

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

22. What type of force opposes the motion of an object sliding on a surface?

23. What happens to the tension force in a rope if additional mass is added to the rope's lower end?

24. What term did Galileo use to describe the tendency of objects to resist changes in their motion?

25. How did Francis Bacon contribute to the criticism of Aristotle's theories on motion?

26. What is the formula for gravitational potential energy near the Earth's surface?

27. A rocket of mass 1000 kg is launched upwards with an acceleration of 20 m/s². What is the force exerted by the rocket's engines?

28. What principle describes the tendency of objects to resist changes in their state of motion?

29. How do Newton's laws of motion contribute to engineering and technology?

30. A 50 kg person jumps with an acceleration of 5 m/s². What force does the ground exert on the person during the jump?

1. Which step involves applying Newton's second law of motion in problem-solving?

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

3. According to Aristotle, what causes the motion of celestial bodies like the Moon and stars?

4. What formula relates torque, force, and lever arm length?

5. How do Newton's laws of motion contribute to understanding the dynamics of fluids?

6. A car of mass 1500 kg experiences a constant braking force of 5000 N. What is the deceleration of the car?

7. What is the formula for the magnetic force on a charge moving with velocity in a magnetic field ?

8. What is the effect of increasing the speed of an object in circular motion on the centripetal force required?

9. How did Aristotle's ideas on motion influence Islamic scholars' understanding of cosmology?

10. 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?

11. How does a tightrope walker maintain balance while walking on a rope?

12. If the force applied to an object is doubled, what happens to the impulse delivered to the object, assuming the time of impact remains unchanged?

13. When a person walks on the ground, according to Newton's third law, what is the reaction force to the person's foot pushing against the ground?

14. For a body to be in translational equilibrium, which condition must be true?

15. How does a rocket move through space after its engines shut off?

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

17. How does inertia relate to the motion of planets in the solar system?

18. What is the formula for kinetic energy?

19. What is the relationship between period and frequency in circular motion?

20. Which unit of mass is equivalent to 1000 grams?

21. What is the formula for the energy stored in a capacitor with capacitance and voltage ?

22. Which of the following scenarios does not exemplify Newton's third law of motion?

23. In Galileo's experiments, what did he observe about rolling objects on a horizontal plane?

24. What force enables a magnet to attract iron filings?

25. What concept describes an object's resistance to changes in its state of motion?

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

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

28. Which formula represents the relationship between the angular velocity , linear velocity , and radius of rotation?

29. What did Galileo's experiments on inclined planes demonstrate about motion?

30. When a ball bounces off a wall, why does the ball experience a change in momentum?

31. Why does a passenger in a moving car tend to lean towards the opposite side when the car turns?

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

33. In which field of physics are Newton's laws of motion extensively used for analyzing the behavior of particles at atomic and subatomic levels?

34. Why are Newton's laws of motion considered classical mechanics?

35. Why does a passenger feel thrown forward when a bus suddenly stops?

36. Which formula represents the relationship between centripetal force , mass , radius of circular motion , and angular velocity ?

37. Which of Newton's laws of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass?

38. In a closed system where no external forces are present, what happens to the total momentum before and after a collision between two objects?

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

40. When catching a cricket ball, why do fielders pull their hands backward upon impact?

41. What is the formula for gravitational potential energy near the Earth's surface?

42. Which of the following is true about the acceleration in circular motion?

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

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

45. What happens to the motion of an object when an applied force is greater than opposing forces like friction?

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

47. How does the mass of an object affect its acceleration, given a constant force?

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

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

50. Which of Galileo's works discussed his experiments with inclined planes and the concept of inertia?