Force and laws of motion - One Line Questions

1. If a force of 10 N acts on a mass of 5 kg, what is the acceleration produced? — 2 m/s²
2. A force of 50 N is applied to a 25 kg object. What is the acceleration? — 2 m/s²
3. The SI unit of force, Newton, is defined as: — 1 kg m/s²
4. If a force of 20 N is applied to a 10 kg object for 5 seconds, what is the impulse? — 100 Ns
5. If a force F acts on a body of mass m, and produces an acceleration a, then F = ma. This is: — Newton's Second Law
6. Which of the following has the most inertia? — A car
7. Inertia is the tendency of an object to: — Resist changes in its state of motion
8. If the mass of an object is doubled and the acceleration is halved, the force applied will: — Remain the same
9. The mathematical expression for Newton's second law of motion is: — F = ma
10. Which law of motion states that for every action, there is an equal and opposite reaction? — Third Law
11. A rocket works on the principle of which law of motion? — Third Law
12. Which law explains why seat belts are important in cars? — First Law
13. The force required to change the state of motion of an object is given by Newton's: — Second Law
14. Which law quantifies the relationship between force, mass, and acceleration? — Second Law
15. Which law states that the total momentum of an isolated system remains constant? — Law of Conservation of Momentum
16. Which quantity is defined as the product of mass and velocity? — Momentum
17. Which of the following is a non-contact force? — Gravitational force
18. What is the unit of mass in the SI system? — Kilogram
19. Which of the following is a contact force? — Frictional force
20. If no net force acts on an object, its velocity will: — Remain constant
21. If the mass of an object decreases, its inertia: — Decreases
22. When a bus suddenly starts moving, passengers tend to fall backward due to: — Inertia of rest
23. When a bus suddenly stops, passengers tend to fall forward due to: — Inertia of motion
24. What happens to the momentum of an object if its mass is doubled and its velocity is halved? — It remains the same
25. What is the SI unit of force? — Newton
26. The unit of mass in the CGS system is: — Gram
27. Impulse is equal to the change in: — Momentum
28. What is the unit of acceleration in the SI system? — m/s²
29. A force is a push or a pull that tends to change or ____ the state of motion of an object. — Maintain
30. Impulse is defined as the product of force and: — Time interval
31. Which of the following is a vector quantity? — Force
32. The rate of change of momentum of an object is directly proportional to the: — Applied force
33. Newton's first law of motion is also known as the law of: — Inertia
34. The property of matter by which it continues in its state of rest or uniform motion in a straight line, unless acted upon by an external force, is called: — Inertia
35. The product of mass and acceleration is equal to: — Force
36. The tendency of an object to resist a change in its state of motion is called: — Inertia
37. What is the unit of impulse in the SI system? — N s
38. The SI unit of momentum is: — Kilogram-meter per second
39. A gun recoils when a bullet is fired. This is an example of: — Newton's Third Law
40. When a person jumps off a boat, the boat moves backward. This illustrates: — Newton's Third Law
41. Which law states that momentum is conserved in a closed system? — Newton's Third Law
42. When you push a wall, the wall pushes back on you with an equal and opposite force. This is an example of: — Newton's Third Law
43. A stationary object begins to move when a force is applied to it. This is an example of: — Newton's Second Law
44. A swimmer pushes water backward to move forward. This is an illustration of: — Newton's Third Law
45. An object is moving at a constant speed in a circular path. Is there a net force acting on it? — Yes, a centripetal force is acting
46. If the net force on an object is zero, the object is either at rest or moving with: — Constant velocity
47. The second law of motion relates force, mass, and: — Acceleration
48. The product of force and the time for which it acts is equal to the change in: — Momentum
49. A body is at rest. What is the net force acting on it? — Zero
50. An object moving with constant velocity has a net force of: — Zero
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