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. 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?

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

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

4. Which factor does not affect the spring constant of a spring?

5. How did Galileo's observations of the moons of Jupiter support his ideas about inertia?

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

7. 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?

8. Which unit of mass is commonly used alongside the Newton in calculations of force?

9. Why does a spinning top remain upright and spin for a long time?

10. Which formula represents the period of a pendulum?

11. Why do astronauts wear thruster packs in space?

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

13. What is the definition of inertia?

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

15. Which of the following equations represents the relationship between impulse and change in momentum?

16. What allows a satellite in orbit around Earth to maintain a stable trajectory?

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

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

19. In which situation is a body in stable equilibrium?

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

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

22. A block of mass 4 kg is pulled horizontally across a rough surface with a force of 20 N. If the coefficient of kinetic friction between the block and the surface is 0.3, what is the acceleration of the block?

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

24. What is the direction of acceleration in circular motion?

25. Why do ship designers use equilibrium principles in determining the ship's stability?

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

27. 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?

28. Which formula represents the relationship between momentum , mass , and velocity ?

29. What is the formula for the magnification of a lens with focal length when an object is placed at distance from the lens?

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

1. Which force is responsible for keeping an object in circular motion?

2. What concept did Newton introduce that fundamentally challenged Aristotle's view of motion?

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

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

5. At what point does spring force become zero?

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

7. Which formula describes the relationship between the Doppler effect, the frequency of the observed wave, the frequency of the source, the speed of sound , and the relative velocity ?

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

9. Which factor affects the magnitude of centripetal force required for circular motion?

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

11. A block of mass 2 kg is sliding down a frictionless inclined plane with an acceleration of 5 m/s². What is the component of the gravitational force acting down the plane?

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

13. What does Newton's second law of motion state?

14. What is the formula for kinetic energy?

15. What happens if the mass of an object in circular motion increases?

16. What is an applied force?

17. Which of the following is an example where impulse is crucial?

18. Which condition ensures rotational equilibrium for an object?

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

20. Why does a cyclist coasting downhill at a constant speed experience dynamic equilibrium?

21. Why does a tightrope walker carrying a balancing pole maintain equilibrium?

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

23. What concept explains why passengers feel pushed forward when a moving car suddenly stops?

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

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

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

27. When a person jumps off a stationary boat into the water, according to Newton's third law, how does the boat react?

28. What is the SI unit of force?

29. 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?

30. Which principle of physics explains why passengers feel pushed backward when a car suddenly accelerates?

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

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

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

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

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

36. What formula describes the relationship between pressure, force, and area?

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

38. What is the formula for the force acting on an object with mass undergoing acceleration ?

39. What causes the water in a spinning bucket to remain inside when turned upside down?

40. Which type of equilibrium describes an object at rest on a horizontal surface with no external forces acting on it?

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

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

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

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

45. According to Newton's third law of motion, when two objects collide and exert equal and opposite forces on each other, which property remains conserved during the collision?

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

47. Why does a pendulum swinging back and forth demonstrate dynamic equilibrium?

48. Which step involves considering the constraints or conditions given in the problem statement in mechanics problem-solving?

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

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