RRB Assistant Loco Pilot - Mechanics: motion, force, work and energy Online Test (MCQ Quiz)

1. What is the SI unit of distance?

A) Kilogram B) Meter C) Second D) Ampere

2. Which of the following is a scalar quantity?

A) Velocity B) Force C) Speed D) Displacement

3. Acceleration is the rate of change of:

A) Distance B) Speed C) Velocity D) Time

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

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

5. Force is defined as the product of mass and:

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

6. What is the SI unit of force?

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

7. Momentum is the product of mass and:

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

8. What is the SI unit of momentum?

A) Newton-second B) Joule-second C) Kilogram-meter per second D) Newton-meter

9. Newton's third law of motion states that for every action, there is an equal and:

A) Independent reaction B) Smaller reaction C) Opposite reaction D) Delayed reaction

10. Work done is defined as the product of force and:

A) Velocity B) Time C) Displacement in the direction of force D) Acceleration

11. What is the SI unit of work?

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

12. If a force of 10 N acts on a body and displaces it by 5 m in the direction of the force, the work done is:

A) 5 J B) 15 J C) 50 J D) 0.5 J

13. Power is the rate of doing:

A) Work B) Force C) Momentum D) Energy

14. What is the SI unit of power?

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

15. If work is done in 10 seconds and power is 50 W, the work done is:

A) 5 J B) 50 J C) 500 J D) 0.2 J

16. Kinetic energy is the energy possessed by a body due to its:

A) Position B) Motion C) Mass D) Temperature

17. The formula for kinetic energy is:

A) mgh B) 1/2 mv^2 C) mv D) F x d

18. What is the SI unit of energy?

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

19. Potential energy is the energy possessed by a body due to its:

A) Motion B) Rest C) Position or Configuration D) Temperature

20. The formula for gravitational potential energy near the Earth's surface is:

A) 1/2 mv^2 B) mgh C) mv D) F x d

21. The principle of conservation of energy states that energy:

A) Can be created but not destroyed B) Can be destroyed but not created C) Can neither be created nor destroyed D) Can be converted into mass

22. When a ball is thrown upwards, its potential energy increases as it goes higher, while its kinetic energy:

A) Increases B) Remains constant C) Decreases D) Becomes zero at the highest point

23. Friction is a force that opposes:

A) Motion B) Rest C) Acceleration D) Gravity

24. Which type of friction is generally the strongest?

A) Rolling friction B) Sliding friction C) Static friction D) Fluid friction

25. Centripetal force is a force that acts:

A) Away from the center of circular motion B) Towards the center of circular motion C) Tangentially to the circular path D) In the direction of motion

26. The force required to keep an object moving in a circular path is called:

A) Centrifugal force B) Centripetal force C) Tension D) Gravitational force

27. What is the unit of impulse?

A) Newton B) Newton-meter C) Newton-second D) Joule

28. Impulse is equal to the change in:

A) Kinetic energy B) Potential energy C) Momentum D) Work

29. If a force is applied for a very short duration, the product of force and time is called:

A) Work B) Power C) Impulse D) Momentum

30. A body is in equilibrium if the net force acting on it is:

A) Zero B) Maximum C) Minimum D) Constant but not zero

31. Which of the following is a non-contact force?

A) Friction B) Tension C) Gravitational force D) Normal force

32. What is the term for the tendency of an object to resist changes in its state of motion?

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

33. A body moving with constant velocity has a net force of:

A) Zero B) Positive C) Negative D) Variable

34. The work done by a force perpendicular to the displacement is:

A) Positive B) Negative C) Zero D) Infinite

35. What is the SI unit of acceleration?

A) m/s B) m/s^2 C) kg m/s D) N

36. Which quantity represents the rate of change of velocity?

A) Speed B) Acceleration C) Displacement D) Momentum

37. If mass is kept constant, doubling the acceleration will:

A) Halve the force B) Double the force C) Quadruple the force D) Keep the force the same

38. Which law relates force, mass, and acceleration?

A) First Law B) Second Law C) Third Law D) Law of Conservation of Energy

39. A body at rest will remain at rest unless acted upon by an external force. This is:

A) Newton's First Law B) Newton's Second Law C) Newton's Third Law D) Archimedes' Principle

40. The product of force and velocity is related to:

A) Work B) Power C) Momentum D) Impulse

41. Which of the following is a vector quantity?

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

42. The change in momentum of an object is equal to the:

A) Force applied B) Impulse C) Work done D) Power delivered

43. In uniform circular motion, the acceleration is directed:

A) Away from the center B) Towards the center C) Tangentially D) Along the velocity

44. The work done by the centripetal force on an object in uniform circular motion is:

A) Positive B) Negative C) Zero D) Variable

45. Which of the following is a unit of power?

A) Joule/second B) Newton-meter C) Kilogram-meter/second D) Newton-second

46. If the speed of a body doubles, its kinetic energy becomes:

A) Half B) The same C) Double D) Four times

47. When a conservative force does positive work, the potential energy of the system:

A) Increases B) Decreases C) Remains constant D) Becomes zero

48. Which quantity is conserved in an isolated system according to the law of conservation of momentum?

A) Kinetic Energy B) Total Energy C) Momentum D) Angular Momentum

49. A machine does 1000 J of work in 5 seconds. Its power is:

A) 200 W B) 5000 W C) 0.2 W D) 100 W

Mechanics: motion, force, work and energy - Online Test

Test Results