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 influence early Christian theologians?

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

3. Which formula represents impulse in terms of force and time?

4. Which force keeps a satellite in orbit around the Earth?

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

6. What characteristic distinguishes an inertial frame of reference from a non-inertial frame?

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

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

9. How does inertia relate to the motion of a pendulum swinging back and forth?

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

11. Which formula describes the relationship between buoyant force, density, volume displaced, and gravitational acceleration?

12. Which of the following equations represents the correct relationship for momentum?

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

14. How do Newton's laws of motion support the study of biomechanics?

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

16. What is the angular velocity of an object in circular motion?

17. If an object's mass is tripled and its velocity is halved, how does its momentum change?

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

19. What causes a book on a table to remain at rest until someone moves it?

20. What concept explains why an ice skater continues to glide forward even after stopping pushing?

21. 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?

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

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

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

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

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

27. Why is it challenging to maintain an inertial frame of reference on a spinning carousel?

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

29. 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?

30. Why do architects consider the distribution of loads on skyscrapers when applying equilibrium principles?

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

2. Which formula describes the relationship between the current flowing through a conductor, the charge passing through it in time , and the number of charge carriers ?

3. 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?

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

5. Which scientist formulated the laws of motion and universal gravitation, further refuting Aristotle's theories on motion and celestial mechanics?

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

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

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

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

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

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

12. What is the formula for centripetal force required for circular motion?

13. How do architects apply equilibrium principles to design cantilever structures?

14. During a head-on collision between two cars, which scenario indicates an inelastic collision?

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

16. What is the formula for the electric potential energy of a point charge in an electric field ?

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

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

19. Which Renaissance scientist challenged Aristotle's ideas by proposing the heliocentric model of the universe?

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

21. In which of the following scenarios is linear momentum conserved?

22. Why are Newton's laws of motion considered fundamental in physics?

23. What is the final step in problem-solving in mechanics?

24. What is the role of considering equilibrium conditions in mechanics problem-solving?

25. Why does a tightrope walker constantly adjust their position while walking?

26. What is the formula for momentum?

27. How do Newton's laws of motion support the study of biomechanics?

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

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

30. Why does a passenger feel a backward jerk when a bus suddenly starts moving?

31. According to Newton's third law of motion, for every action, there is an equal and opposite:

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

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

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

35. How did Aristotle's ideas on motion influence early Christian theologians?

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

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

38. What happens when a ball is thrown straight up into the air?

39. 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?

40. What concept explains why an ice skater continues to glide forward even after stopping pushing?

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

42. What does the term "resolution of forces" refer to in mechanics problem-solving?

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

44. What is the formula for elastic potential energy?

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

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

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

48. When a cannon fires a cannonball, according to Newton's third law, how does the cannon recoil?

49. What is the formula for the Doppler effect frequency observed when a source emitting frequency moves at velocity towards an observer?

50. If the time interval during which a force acts on an object is increased, what happens to the impulse delivered to the object, assuming the force remains unchanged?