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 does fluid friction differ from other types of frictional forces?

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

3. What is the formula for the power dissipated in an electrical resistor carrying current ?

4. How did Galileo's experiments contribute to the understanding of inertia?

5. When a person walks on a moving boat from bow to stern, how does the boat react according to Newton's third law?

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

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

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

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

10. Which formula represents the relationship between the electric potential energy of a point charge and the electric potential at a distance from the charge?

11. Why is Newton's third law important in understanding motion and forces?

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

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

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

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

16. What formula represents the relationship between magnetic force, charge, velocity, and magnetic field strength?

17. In which scenario is centripetal force necessary for maintaining circular motion?

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

19. What was one significant aspect of Aristotle's theories on motion that was criticized by early modern scientists?

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

21. What is the formula for torque exerted by a force acting at an angle?

22. What is the SI unit of force?

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

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

25. What type of motion does a swing exhibit at its highest point?

26. What is an applied force?

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

28. What is the direction of tension force in a rope wrapped around a pulley system?

29. How does Newton's second law relate force to acceleration?

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

1. What is an applied force?

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

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

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

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

6. Which condition must be met for an elevator to represent an inertial frame of reference?

7. What happens to an astronaut inside a spaceship traveling through deep space?

8. What is the definition of inertia?

9. A hockey puck of mass 0.2 kg is pushed along a frictionless surface with a force of 2 N. What is the acceleration of the puck?

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

11. Which formula represents the relationship between the half-life of a radioactive substance and its decay constant ?

12. Which aspect of Aristotle's ideas influenced the medieval understanding of celestial mechanics?

13. What was one significant aspect of Aristotle's theories on motion that was criticized by early modern scientists?

14. A hockey puck of mass 0.1 kg is pushed along a frictionless surface with a force of 5 N. What is the acceleration of the puck?

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

16. Which law of motion is crucial in understanding the operation of a catapult?

17. 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?

18. Which law of motion is crucial in understanding the forces acting on vehicles during acceleration and braking?

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

20. Why is the equation F = ma considered a fundamental principle in physics?

21. Which unit of force is defined as the force required to accelerate a mass of one pound at a rate of one foot per second squared?

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

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

24. Which of Aristotle's ideas was later disproved by Galileo's experiments?

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

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

27. What type of force is responsible for maintaining circular motion?

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

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

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

31. 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 ?

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

33. 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?

34. How does Newton's second law explain the motion of a car accelerating from rest?

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

36. 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?

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

38. What is the formula for torque exerted by a force acting at an angle?

39. What is momentum defined as in physics?

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

41. Which aspect of motion does the equation F = ma quantify?

42. 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?

43. Why does a cyclist need to pedal continuously to keep moving at a constant speed on a flat road?

44. How does an astronaut in a spacecraft experience inertial frames of reference?

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

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

47. How does a bullet fired from a gun travel in a straight line after leaving the barrel?

48. When a person stands still on a scale, what does the scale measure?

49. When a person sits on a chair without moving, what condition ensures the person is in equilibrium?

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