JEE Main - Force and inertia Online Test (MCQ Quiz)

1. Newton's first law of motion is also known as the law of:

A) Momentum B) Inertia C) Action and Reaction D) Conservation of Energy

2. Inertia is the property of a body by virtue of which it tends to:

A) Change its state of rest or uniform motion B) Oppose the applied force C) Remain in its state of rest or uniform motion D) Increase its velocity

3. Which of the following quantities is a measure of inertia?

A) Velocity B) Acceleration C) Mass D) Force

4. A body is moving with constant velocity. What is the net force acting on it?

A) Equal to its mass B) Equal to its velocity C) Zero D) Cannot be determined

5. If the net force acting on an object is zero, then the object:

A) Must be at rest B) Must be accelerating C) Must be moving with constant velocity D) Must be changing its direction

6. Why do passengers in a bus tend to fall backward when the bus suddenly starts moving forward?

A) Due to inertia of motion B) Due to inertia of rest C) Due to friction D) Due to gravity

7. Why do passengers tend to fall forward when a moving bus suddenly stops?

A) Due to inertia of rest B) Due to inertia of motion C) Due to centrifugal force D) Due to air resistance

8. A force is defined as that which causes change in:

A) Mass B) Momentum C) State of motion D) Density

9. Which type of inertia is responsible for a carpet being beaten to remove dust?

A) Inertia of motion B) Inertia of rest C) Inertia of direction D) Inertia of velocity

10. A heavier object has more inertia than a lighter object because:

A) It has more mass B) It has more velocity C) It requires more force to move D) It has more acceleration

11. When a vehicle takes a sharp turn, passengers lean outwards. This is due to:

A) Inertia of motion B) Inertia of rest C) Centripetal force D) Centrifugal force

12. The inertia of an object is directly proportional to its:

A) Velocity B) Acceleration C) Mass D) Momentum

13. If an object is at rest, its inertia tends to keep it:

A) Moving B) At rest C) Accelerating D) Decelerating

14. Which of the following statements about force is correct?

A) Force is a scalar quantity. B) Force is a vector quantity. C) Force always causes motion. D) Force is the cause of inertia.

15. Inertia is a property related to:

A) The tendency to resist changes in velocity. B) The tendency to accelerate. C) The tendency to exert force. D) The tendency to decrease speed.

16. A ball is thrown upwards. Which force opposes its upward motion?

A) Inertia of motion B) Gravity C) Air resistance D) Normal force

17. What happens to the inertia of an object if its mass is doubled?

A) It remains the same B) It is halved C) It is doubled D) It becomes zero

18. A constant force acts on a body. The body will have:

A) Constant velocity B) Constant acceleration C) Zero velocity D) Variable acceleration

19. The unit of force in the SI system is:

A) Dyne B) Joule C) Watt D) Newton

20. If a body is accelerating, it means:

A) The net force on it is zero B) The net force on it is non-zero C) It is moving with constant velocity D) It is at rest

21. Why is it harder to push a heavy box than a light box starting from rest?

A) The heavy box has more momentum. B) The heavy box has more inertia. C) The heavy box has more velocity. D) The heavy box has more acceleration.

22. A force is required to:

A) Maintain a body at rest B) Maintain a body in uniform motion C) Change the state of motion of a body D) Increase the mass of a body

23. Which of the following is an example of inertia of motion?

A) A book resting on a table B) A car moving at a constant speed C) A person jumping out of a moving train and falling down D) A satellite orbiting the Earth

24. If the mass of an object decreases, its inertia:

A) Increases B) Decreases C) Remains the same D) Becomes zero

25. Newton's first law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external:

A) Force B) Momentum C) Acceleration D) Velocity

26. The tendency of a body to resist a change in its state of motion is called:

A) Momentum B) Force C) Inertia D) Acceleration

27. A car is moving at a high speed. To stop it quickly, brakes are applied. The car slows down due to:

A) Inertia B) Friction C) Applied force D) Gravity

28. Which quantity is conserved when no net force acts on a system?

A) Energy B) Momentum C) Mass D) Velocity

29. A body experiences a net force. This implies that the body must be:

A) At rest B) Moving with constant velocity C) Accelerating D) Decelerating at a constant rate

30. The concept of inertia is most directly related to which of Newton's laws?

A) First Law B) Second Law C) Third Law D) Law of Gravitation

31. Which of the following has the largest inertia?

A) A tennis ball B) A cricket ball C) A shot put D) A feather

32. When you shake a wet towel to dry it, the water droplets fly off due to:

A) Inertia of rest B) Inertia of motion C) Centripetal force D) Gravity

33. A force can change the velocity of an object by changing its:

A) Mass B) Direction only C) Speed only D) Speed and/or direction

34. The measure of the resistance of an object to a change in its state of motion is called:

A) Momentum B) Inertia C) Force D) Mass

35. If the net force on a system is zero, then the total momentum of the system:

A) Changes B) Remains constant C) Becomes zero D) Becomes infinite

36. A person is standing on a skateboard. If they throw a ball forward, the person and skateboard will move:

A) Backward B) Forward C) Upward D) Remain stationary

37. Inertia of rest is the tendency of an object to resist a change in its:

A) State of motion B) State of rest C) State of uniform velocity D) State of acceleration

38. Which of the following is NOT a unit of force?

A) Newton B) Dyne C) Pascal D) Poundal

39. A force is applied to an object, causing it to accelerate. If the mass of the object is increased while the force remains the same, the acceleration will:

A) Increase B) Decrease C) Remain the same D) Become zero

40. Inertia is a scalar quantity. Its value depends only on:

A) Velocity B) Acceleration C) Mass D) Force

41. When a bus starts suddenly, a passenger's feet move with the bus, but their upper body tends to remain at rest due to:

A) Inertia of motion B) Inertia of rest C) Friction between the feet and the floor D) The force exerted by the bus seat

42. A body is in motion. A force acting on it can cause it to:

A) Start moving faster B) Start moving slower C) Change direction D) All of the above

43. Which of the following is an example of inertia of direction?

A) A ball rolling down a hill B) A car turning a corner C) A book lying on a table D) A person jumping from a height

44. The law of inertia is most applicable in which scenario?

A) When a constant force is applied. B) When the net force on an object is zero. C) When an object is changing its direction. D) When an object is experiencing friction.

45. If a force of 10 N acts on a mass of 5 kg, the acceleration produced is:

A) 0.5 m/s² B) 2 m/s² C) 5 m/s² D) 10 m/s²

46. A child is sitting in a car. If the car suddenly stops, the child tends to move forward due to:

A) Inertia of rest B) Inertia of motion C) Momentum D) Friction

47. Which of these statements best describes the relationship between force and inertia?

A) Inertia causes force. B) Force is a measure of inertia. C) Force is required to overcome inertia. D) Inertia is a type of force.

48. A feather and a stone are dropped from the same height in a vacuum. Which one will reach the ground first and why?

A) The stone, due to its greater mass. B) The feather, due to its shape. C) They will reach at the same time, as inertia affects them equally in the absence of air resistance. D) They will reach at the same time, as gravity affects them equally.

49. The property of matter that resists any change in its state of motion is called:

A) Mass B) Weight C) Inertia D) Momentum

50. If a net force of zero is applied to a body of mass 'm', what will be its acceleration?

A) m B) Infinite C) Zero D) Cannot be determined without knowing the velocity

Force and inertia - Online Test

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