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

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

3. What is the definition of inertia?

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

5. Why is it easier to push an empty shopping cart than a fully loaded one?

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

7. When a rocket accelerates upwards, according to Newton's third law, the rocket pushes against the exhaust gases and the exhaust gases push ________.

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

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

10. What is impulse defined as in physics?

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

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

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

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

15. What is the relationship between Newton and dyne?

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

17. What principle does Newton's second law extend from Newton's first law?

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

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

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

21. 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?

22. What is the formula for elastic potential energy?

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

24. According to Aristotle, what causes the motion of celestial bodies like the Moon and stars?

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

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

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

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

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

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

1. When a goalkeeper catches a fast-moving soccer ball, what happens to the goalkeeper and the ball according to Newton's third law?

2. 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 ?

3. Why does a tennis ball bounce back after hitting a wall?

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

5. Why does a book slide off a moving car when it suddenly stops?

6. What is the relationship between centripetal force and centripetal acceleration?

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

8. Which unit of force is based on the gravitational force acting on a mass of one kilogram?

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

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

11. Which scientist first formulated the law of universal gravitation?

12. When a soccer player kicks a ball, according to Newton's third law, what is the reaction force to the player's kick?

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

14. A box of mass 5 kg is placed on an inclined plane that makes an angle of 30 degrees with the horizontal. If the coefficient of friction between the box and the plane is 0.4, what is the acceleration of the box down the plane when a force of 30 N is applied parallel to the plane?

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

16. How did Aristotle's ideas influence Islamic scholars such as Ibn Sina (Avicenna) and Ibn Rushd (Averroes)?

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

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

19. Which force holds the nucleus of an atom together?

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

21. What is the formula for the pressure exerted by a gas in a container of volume at temperature and containing moles of gas?

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

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

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

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

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

27. Which formula describes the relationship between work , force , and displacement in the direction of the force?

28. In an elastic collision between two objects, which of the following is conserved?

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

30. How do engineers apply equilibrium principles in bridge design?

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

32. What happens to a satellite orbiting the Earth when there is no external force acting on it?

33. If two ice skaters push against each other on a frictionless surface, what happens to their velocities?

34. According to Aristotle, what is the natural state of motion for objects on Earth?

35. 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?

36. Which early scientist incorporated Aristotle's ideas on motion into his geocentric model of the universe?

37. In the context of physics, what does inertia primarily refer to?

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

39. How does the direction of applied force affect the motion of an object?

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

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

42. Why does a cannon recoil backward when it fires a cannonball?

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

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

45. What is the formula for Newton's First Law of Motion?

46. Which force causes a stone tied to a string to move in a circular path when swung around?

47. What is the formula for the period of a mass-spring system with spring constant and mass ?

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

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

50. In a collision between two objects, what remains conserved according to the principle of conservation of momentum?