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. How did Aristotle's ideas on motion differ from later theories proposed by scientists like Galileo and Newton?

2. A force of 20 N is applied to an object of mass 4 kg. What is the resulting acceleration?

3. When does an object have the greatest momentum?

4. How does Newton's second law apply to the motion of a rocket in space?

5. When a hockey player hits a puck with a stick, according to Newton's third law, what is the reaction force to the player's hit?

6. Which type of equilibrium describes a situation where all forces and torques acting on an object balance each other while the object moves at a constant velocity?

7. What is the formula for the period of a simple harmonic oscillator with spring constant and mass ?

8. A rocket accelerates upwards by ejecting exhaust gases downwards. According to Newton's third law, how does the rocket's momentum change during this process?

9. Which formula describes the relationship between the force exerted by an ideal gas, its pressure , and volume ?

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

11. How does Newton's third law of motion apply to swimming?

12. In a system of multiple ropes supporting a load, how does tension force compare in ropes with different angles of inclination?

13. Which concept did Descartes introduce to explain motion and the behavior of matter, challenging Aristotle's ideas?

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

15. Which force provides the centripetal force for a car turning on a curve?

16. Why does a heavy object require more force to be moved than a lighter object?

17. What is the formula for angular momentum?

18. What force is required to accelerate a 1000 kg car at 2 m/s²?

19. During a collision between two billiard balls on a frictionless table, what remains constant throughout the collision process?

20. What is the primary reason why passengers wear seat belts in vehicles?

21. 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?

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

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

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

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

26. Which formula describes the gravitational force between two masses?

27. Why does a car skid when suddenly turning on a wet road?

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

29. 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?

30. Which of the following is an example where tension force is involved?

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

2. Which of the following best demonstrates inertia in action?

3. In Newton's Second Law of Motion, what does represent?

4. In a collision between two cars, how does the impulse experienced by each car compare, assuming they experience the same force and time of impact?

5. Which factor does not affect the gravitational force between two objects?

6. In which reference frame does centrifugal force appear to act?

7. When a cannon fires a cannonball, according to Newton's third law, what is the reaction force to the force exerted on the cannonball?

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

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

10. Which concept from Aristotle's physics was criticized for its lack of empirical evidence by later Renaissance scientists?

11. What is the SI unit of applied force?

12. In which scenario would rolling friction typically be encountered?

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

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

15. What is the formula for elastic potential energy?

16. What concept from Aristotle's physics influenced medieval European scholars in their study of motion?

17. Which formula describes the relationship between wavelength, frequency, and wave speed?

18. What happens to an object when the applied force is zero?

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

20. How does Newton's second law of motion explain the acceleration of a car?

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

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

23. Which condition ensures rotational equilibrium for an object?

24. Which physical quantity is used to measure tension force?

25. Which type of equilibrium describes a situation where all forces and torques acting on an object balance each other while the object moves at a constant velocity?

26. According to Aristotle, why do objects on Earth come to rest when no external forces are applied?

27. 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 ?

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

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

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

31. What is the SI unit of force?

32. Which concept did Johannes Kepler introduce to explain the motion of planets around the Sun, refuting Aristotle's geocentric model?

33. Which formula represents the relationship between the torque applied to a rigid body, its moment of inertia , and angular acceleration ?

34. Which formula defines the relationship between force, mass, and acceleration?

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

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

37. What does the principle of conservation of linear momentum state?

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

39. Why does a football roll to a stop on a grass field?

40. In which scenario is centripetal force not required for circular motion?

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

42. What is the relationship between centripetal force and the radius of the circular path?

43. According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its:

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

45. What is the difference between applied force and normal force?

46. Why does a satellite orbiting Earth maintain dynamic equilibrium?

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

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

49. An elevator of mass 1000 kg is accelerating upwards at 2 m/s². What is the tension in the cable supporting the elevator?

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