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