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Class 11 Physics (Part I) Chapter 3 Laws Of Motion Quiz 1 (60 MCQs)

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1. Forces always act in equal and opposite pairs.
2. The action and reaction forces referred to in Newton's third law of motion .....
3. ..... law of Newton gives the definition of force
4. Newtons 2nd Law of Motion
5. A wagon is pulled to the right using a force of 20 N and to the left using a force of 30 N. What is the net force on the wagon?
6. A garbage can full of trash needs a stronger force to move it to the curb than an empty garbage can. Which of Newton's Laws does this represent?
7. The Law of Inertia
8. Friction at rest is .....
9. What force slows down and eventually stops a ball that is rolling on the ground?
10. If two objects have the same mass, then the faster moving object has ..... momentum.
11. Which of Newton's Three Laws does the following statement satisfy? The relationship between an object's mass (m), its acceleration (a), and the applied force F is F=ma. Acceleration and force are vectors. This law requires that the direction of the acceleration vector is in the same direction as the force vector.
12. Terminal velocity
13. Newton's first law of motion states that an object at rest will continue to stay at rest unless there is a/n ..... acted on the object.
14. Joe pushes a box with a force of 16 Nto the left. Ann pushes the same boxfrom the opposite side with a force of10 N to the right. What will be theresult?
15. A 120 kg lineman moving at-2 m/s tackles an 80 kg fullback moving at +8 m/s. If the fullback's velocity after they collide is +2 m/s, what is the lineman's velocity?
16. 14) If I double the mass of one object, but don't change anything else ..... what happens to the gravitational force between two objects?
17. Which of the following scenarios best illustrates Newton's First Law of Motion?
18. A student pushes against a tree with a force of 10N (newtons). What is the amount of force exerted by the tree?
19. What is another term for change in velocity?
20. Your car has a mass of 2500 kg and a force of 5000 N. How fast will it accelerate?
21. Which experiment listed below will best determine how friction affects the speed of a rolling object?
22. TRUE or FALSEA force is a push or a pull that can change the motion of an object.
23. The relationship among force, mass, and acceleration is stated in .....
24. A Rocket taking flight is what Law?
25. Combination of all the forces acting on an object is called ..... ?
26. Any motion in which an object is moving along a curved path
27. When was Sir Isaac Newton born?
28. Object at rest stays at rest.
29. If the action force is of 5 N, then the reaction force will be .....
30. In Newton's Second Law equation, what does the m stand for?
31. A car goes around a curve at a constant speed. There is not a net force acting on it.
32. Two objects of different masses falling freely, near the surface of earth, will
33. According to Newton's second law of motion, force is equal to mass times .....
34. Acceleration of an object is directly related to the net force and inversely related to its mass.
35. How does Newton's third law explain how a rocket takes off?
36. Tisa and Lily ran a race in gym class. Lily was off balance so she did not start until 2 seconds had passed. What were the average speeds of the two runners during the periods in which they were actually running? (Note:Lily did not start running until time = 2 s.)
37. The motion of a vehicle being driven through heavy traffic is an example of
38. To increase acceleration of an object, you reduce it's ..... or increase the applied force.
39. In order to be ..... forces, their effects must cancel each other out and not cause a change in an object's motion.
40. Which law of motion is also known as the Law of Action-Reaction?
41. Without a force to stop or slow a coasting object, the object will coast forever in a ..... line.
42. Who invented the 3 Laws of Motion?
43. As the fuel in a rocket ignites, the force of the gas expansion and explosion pushes out the back of the rocket and pushes the rocket forward.
44. The product of an object's mass and velocity is called
45. Centrifugal force acts
46. A passenger train is brought to rest by suddenly applying brakes.Which compartment will come to rest first?
47. When you jump on your bed, the action is your jump. What is the reaction? (Newton's 3rd law)
48. Forces that are equal in size but opposite in direction are .....
49. All of the following apply the third law of motion EXCEPT .....
50. Newton's first law of motion applies only to stationary objects.
51. Which is an example Newton's 2nd Law?
52. What law associates with action and reaction?
53. The rule that in the absence of outside forces the total momentum of objects that interact does not change is called
54. ..... is a change in velocity
55. When two birds are pulling on a worm and the worm moves toward the first bird, you know that the forces are .....
56. A force of 10N acts on a body of mass 20kg for 10s. Change in its momentum is
57. A wheelbarrow is experiencing two forces. One is pushing 5N east and another 5N west. What is true about the motion of the wheelbarrow?
58. A body of mass 40g is moving with a velocity v$_{1}$. If an impulse J is imparted to the body such that its velocity becomes v$_{2}$, then:
59. Which one of the following is incorrect about force?
60. Which law states that for every action, there is an equal and opposite reaction.
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