1. Which of the following best defines a force?
(A) A push or pull acting on an object
(B) The resistance of air on a moving body
(C) The amount of matter in an object
(D) The distance traveled per unit time
2. The SI unit of force is:
(A) Joule
(B) Watt
(C) Newton
(D) Pascal
3. Force is a __________ quantity.
(A) Scalar
(B) Vector
(C) Derived scalar
(D) Dimensionless
4. Who formulated the three laws of motion that describe forces?
(A) Galileo Galilei
(B) Isaac Newton
(C) Albert Einstein
(D) Blaise Pascal
5. 1 Newton is defined as:
(A) Force required to move 1 kg mass by 1 m in 1 sec
(B) Force required to accelerate 1 kg mass by 1 m/s²
(C) Weight of 1 kg on Earth
(D) Energy of 1 joule per second
6. Which of the following is NOT an effect of force?
(A) Change in shape
(B) Change in motion
(C) Change in mass
(D) Change in direction
7. Balanced forces acting on a body will cause:
(A) Acceleration
(B) No change in motion
(C) Rotation
(D) Vibration
8. Unbalanced forces acting on a body result in:
(A) Change in state of motion
(B) No effect
(C) Constant velocity
(D) Increase in mass
9. Which of the following is a contact force?
(A) Gravity
(B) Friction
(C) Magnetic force
(D) Electrostatic force
10. Which of the following is a non-contact force?
(A) Normal force
(B) Air resistance
(C) Magnetic force
(D) Friction
11. The force of attraction between any two masses is called:
(A) Friction
(B) Gravity
(C) Magnetism
(D) Pressure
12. The force exerted by a surface to support the weight of an object is called:
(A) Normal force
(B) Frictional force
(C) Tension
(D) Thrust
13. The force resisting the motion of objects in contact is:
(A) Tension
(B) Friction
(C) Gravity
(D) Elastic force
14. The force applied through a string, rope, or cable is:
(A) Friction
(B) Tension
(C) Normal
(D) Elastic
15. Which instrument is commonly used to measure force?
(A) Thermometer
(B) Dynamometer
(C) Barometer
(D) Ammeter
16. Which law states that an object remains at rest or in uniform motion unless acted upon by a force?
(A) Newton’s First Law
(B) Newton’s Second Law
(C) Newton’s Third Law
(D) Law of Gravitation
17. The relationship F = ma represents:
(A) Newton’s First Law
(B) Newton’s Second Law
(C) Newton’s Third Law
(D) Law of inertia
18. For every action, there is an equal and opposite reaction. This is:
(A) Newton’s First Law
(B) Newton’s Second Law
(C) Newton’s Third Law
(D) Law of gravitation
19. Which of the following is NOT a fundamental effect of a force?
(A) Change speed
(B) Change direction
(C) Change shape
(D) Change density
20. A force that opposes motion in fluids like air and water is:
(A) Thrust
(B) Drag
(C) Lift
(D) Pressure
21. The turning effect of a force is called:
(A) Momentum
(B) Torque
(C) Impulse
(D) Friction
22. The force per unit area is known as:
(A) Pressure
(B) Density
(C) Impulse
(D) Work
23. Which of these is a vector quantity related to force?
(A) Work
(B) Energy
(C) Momentum
(D) Pressure
24. If a body is moving with uniform velocity, the net force acting on it is:
(A) Zero
(B) Constant
(C) Increasing
(D) Decreasing
25. When two equal forces act in opposite directions on a body, the net force is:
(A) Equal to one force
(B) Zero
(C) Double
(D) Negative
26. Which force enables us to walk without slipping?
(A) Gravity
(B) Normal force
(C) Friction
(D) Tension
27. The product of force and time is called:
(A) Work
(B) Energy
(C) Impulse
(D) Torque
28. The force which keeps planets in orbit around the Sun is:
(A) Magnetism
(B) Gravity
(C) Friction
(D) Centrifugal force
29. The force acting perpendicular to a surface is called:
(A) Tension
(B) Normal force
(C) Friction
(D) Torque
30. A stretched spring applies:
(A) Elastic force
(B) Friction
(C) Magnetic force
(D) Normal force
31. Which of the following forces is responsible for tides on Earth?
(A) Air resistance
(B) Gravitational pull of the Moon
(C) Magnetic force
(D) Earth’s rotation
32. Which of these forces is always attractive?
(A) Friction
(B) Gravity
(C) Electrostatic
(D) Magnetic
33. A force acting on a moving charge in a magnetic field is called:
(A) Lorentz force
(B) Tension
(C) Normal force
(D) Centripetal force
34. The net force acting on an object is called:
(A) Resultant force
(B) Tension
(C) Friction
(D) Momentum
35. The tendency of an object to resist change in its state of motion is called:
(A) Friction
(B) Inertia
(C) Impulse
(D) Torque
36. The force of a jet engine pushing an aircraft forward is:
(A) Drag
(B) Thrust
(C) Lift
(D) Friction
37. Which of the following increases with greater force applied over the same area?
(A) Density
(B) Pressure
(C) Volume
(D) Mass
38. The force that causes an object to move in a circular path is:
(A) Centripetal force
(B) Centrifugal force
(C) Frictional force
(D) Torque
39. The equation W = F × d represents:
(A) Impulse
(B) Work
(C) Pressure
(D) Momentum
40. Which of the following is a non-mechanical force?
(A) Friction
(B) Magnetic
(C) Tension
(D) Normal
41. Which of the following is NOT a unit of force?
(A) Dyne
(B) Pound
(C) Newton
(D) Joule
42. Which type of force occurs due to stretching or compression of materials?
(A) Elastic force
(B) Friction
(C) Tension
(D) Gravity
43. Which property of a body is directly related to the force required for acceleration?
(A) Density
(B) Mass
(C) Volume
(D) Pressure
44. Which law explains why seatbelts are necessary in cars?
(A) Newton’s First Law
(B) Newton’s Second Law
(C) Newton’s Third Law
(D) Law of gravitation
45. Which of the following is measured in Newton-meters (Nm)?
(A) Torque
(B) Force
(C) Momentum
(D) Pressure
46. The force that slows down a parachute is:
(A) Thrust
(B) Drag
(C) Lift
(D) Gravity
47. A rocket moves upward due to:
(A) Gravitational pull
(B) Thrust and reaction force
(C) Magnetic force
(D) Air resistance
48. The rate of change of momentum is equal to:
(A) Torque
(B) Force
(C) Pressure
(D) Impulse
49. A force that acts at a distance without physical contact is called:
(A) Contact force
(B) Non-contact force
(C) Frictional force
(D) Elastic force
50. The force that prevents objects from floating off Earth is:
(A) Friction
(B) Gravity
(C) Tension
(D) Pressure