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

2. Why do astronauts wear thruster packs in space?

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

4. Which force balances centrifugal force in a rotating system?

5. Which of the following scenarios best exemplifies Newton's third law of motion?

6. Which formula describes the relationship between the force required to accelerate an object of mass with acceleration ?

7. How does a cyclist stay balanced while riding a bicycle?

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

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

10. 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?

11. When a person pushes a heavy box along the floor, according to Newton's third law, what is the reaction force to the person's push?

12. What is spring force?

13. What phenomenon occurs due to gravitational force that determines the orbits of planets around the Sun?

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

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

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

17. What is the relationship between Newton and dyne?

18. In the equation F = ma, what does 'F' represent?

19. What did Aristotle propose as the cause of motion?

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

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

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

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

24. What is the formula for the period of a simple pendulum of length oscillating with small amplitude?

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

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

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

28. Which formula describes the relationship between the wavelength of a wave, its frequency , and the speed of the wave?

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

30. What is the formula to calculate the gravitational force between two objects?

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

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

3. When a rocket launches into space, why does it expel exhaust gases downward?

4. In a rocket launch, when the rocket engine ignites, according to Newton's third law, what is the reaction force?

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

6. What is the formula for elastic potential energy?

7. Which formula represents the relationship between the work done by a constant force acting over a displacement in the direction of the force?

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

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

10. What is the primary reason why satellites in geostationary orbit are considered to be in inertial frames of reference?

11. What is the SI unit of force?

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

13. Why does a ball thrown vertically into the air eventually fall back down?

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

15. How did Aristotle explain the behavior of objects falling towards the Earth?

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

17. What defines an inertial frame of reference in physics?

18. In a collision between a car and a truck, what determines the direction of their individual velocities after collision, according to Newton's third law?

19. Why is it difficult to start pushing a heavy object that is at rest?

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

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

22. Which formula represents the relationship between the heat absorbed or released during a phase change, the mass of the substance, and the latent heat of fusion ?

23. How does an airplane flying at a constant speed relate to inertial frames of reference?

24. What is the formula for the centripetal acceleration of an object moving in a circle of radius with constant speed ?

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

26. Which of the following is an example of an applied force?

27. Which force allows a person to lift a book off a table?

28. Which formula describes the relationship between spring constant , displacement , and restoring force of a spring?

29. Which concept did Aristotle use to explain the motion of projectiles like arrows?

30. Which physical quantity remains constant in uniform circular motion?

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

32. How do biomechanical engineers use equilibrium principles to design prosthetic limbs?

33. When a car suddenly stops, the passengers inside the car tend to lurch forward. Which law of motion explains this phenomenon?

34. What happens if the centripetal force acting on an object in circular motion is reduced?

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

36. When a person pushes against a wall with a force, according to Newton's third law, the wall exerts an equal and opposite force ____________.

37. What is the formula for the Lorentz force on a charged particle with charge , velocity , and experiencing a magnetic field ?

38. Which force is responsible for the pressure exerted by a fluid at a depth?

39. Why does a rocket need to overcome inertia to leave Earth's atmosphere?

40. Which force allows a person to hear sound waves?

41. If the force acting on an object is doubled, how does its acceleration change, assuming the mass remains constant?

42. Why do astronauts experience weightlessness in space despite the presence of gravitational force?

43. What was a key criticism of Aristotle's theory of motion by medieval scholars influenced by Islamic philosophers?

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

45. Which scientist conducted experiments to refute Aristotle's theory that heavier objects fall faster than lighter objects?

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

47. What happens to the static frictional force when an applied force tries to move an object but is less than the maximum static frictional force?

48. What is the relationship between Newton and dyne?

49. Which law of motion states that for every action, there is an equal and opposite reaction?

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