This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part I > Class 11 Physics (Part I) Chapter 3 Laws Of Motion – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 3 Laws Of Motion Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is the unit of Force:- A) J.s$^{-1}$. B) N.s$^{-1}$. C) Kg.m/s. D) Kg.m/s$^{2}$. Show Answer Correct Answer: D) Kg.m/s$^{2}$. 2. What causes a ball rolling across a rug to slow to a stop? A) Pressure. B) Temperature. C) Gravity. D) Friction. Show Answer Correct Answer: D) Friction. 3. A train rolls to a stop along a horizontal track without the conductor applying the brakes. What answer choice BEST explains why this occurred? A) The train ran out of momentum. B) The opposing force of friction stopped the train. C) The natural state of the train is not to be in motion. D) The force of gravity slowed the train until it stopped. Show Answer Correct Answer: B) The opposing force of friction stopped the train. 4. A body at rest will remain at rest unless acted upon by an unbalanced force. A) Newton's 1st Law. B) Newton's 2nd Law. C) Newton's 3rd Law. D) None of the above. Show Answer Correct Answer: A) Newton's 1st Law. 5. You pull a wagon with your younger sister in it. Which of these would accelerate the rate at which you can pull the wagon? A) Have your sister push down on the wagon. B) Pull the wagon with less force. C) Pull the wagon with more force. D) Put another of your siblings in the wagon. Show Answer Correct Answer: C) Pull the wagon with more force. 6. Which of the following statements is true according to Newton's Laws? A) An object will move faster if the mass is increased. B) An object will accelerate if a net force is applied. C) An object will move in the opposite direction of the applied force. D) An object will stop moving if no force is applied. Show Answer Correct Answer: B) An object will accelerate if a net force is applied. 7. Both the mass and the net force of an accelerating object are suddenly halved. This will cause the acceleration of the object to A) Double. B) Be halved. C) Remain unchanged. D) None of the above. Show Answer Correct Answer: C) Remain unchanged. 8. Identify which law applies:You dribble a basketball while walking on a basketball court. A) Newton's 1st law of motion. B) Newton's 2nd law of motion. C) Newton's 3rd law of motion. D) None of the above. Show Answer Correct Answer: C) Newton's 3rd law of motion. 9. A crumpled piece of paper hits the ground before a flat sheet of paper because A) The crumpled paper is less massive. B) The crumpled paper is more massive. C) The acceleration of gravity is greater on the crumpled paper. D) There is more air resistance against the flat paper. Show Answer Correct Answer: D) There is more air resistance against the flat paper. 10. Solve the following equation to find the acceleration of the object.20n = 10kg x a A) 8 meters per second. B) 2 meters per second. C) 2 kilometers. D) 200 meters per second. Show Answer Correct Answer: B) 2 meters per second. 11. Which law states that an object that exerts a force on another object will receive an equal and opposite force from the second object A) Newton's 1st. B) Newton's 2nd. C) Newton's 3rd. D) None of the above. Show Answer Correct Answer: C) Newton's 3rd. 12. What is net force? A) The combined forces acting on a particular object. B) The same thing is gravity. C) A force associated with the internet. D) The same thing as inertia. Show Answer Correct Answer: A) The combined forces acting on a particular object. 13. Which of Newton's laws describes pushing a massive truck vs a small car? A) Newton's 1st Law. B) Newton's 2nd Law. C) Newton's 3rd Law. D) None of the above. Show Answer Correct Answer: B) Newton's 2nd Law. 14. When an object resists change, like a body in a turning car, it is called ..... A) Friction. B) Drag force. C) Force. D) Inertia. Show Answer Correct Answer: D) Inertia. 15. Action and reaction force pairs occur A) Only when there is motion. B) Only when there is no motion. C) Whether there is motion or not. D) None of the above. Show Answer Correct Answer: C) Whether there is motion or not. 16. A person is pushing their car forward with 1000 N of force causing it to speed up. After a while the car enters some mud which applies 1000 N of force in the opposite direction. At this point what will happen to the car? A) It will stop immediately. B) It will slow down and eventually stop. C) It will move with a constant speed and direction. D) It will continue to speed up, just not as quickly. Show Answer Correct Answer: C) It will move with a constant speed and direction. 17. Newton's law of inertia also states that an object in motion ..... (think of the space launch that ran out of fuel) A) Takes the path of most resistance. B) Resists a chance in direction. C) Goes in random directions, unless acted upon by another force. D) None of the above. Show Answer Correct Answer: B) Resists a chance in direction. 18. Which of Newton's Laws is the Law of Inertia? A) Newton's 1st Law. B) Newton's 2nd Law. C) Newton's 3rd Law. D) None of the above. Show Answer Correct Answer: A) Newton's 1st Law. 19. More mass = More inertia A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 20. An object's acceleration depends on its mass and the net force acting on it. A) Newton's First Law. B) Newton's Second Law. C) Newton's Third Law. D) All of these. Show Answer Correct Answer: B) Newton's Second Law. 21. To accelerate a vehicle t 3m/s2 what force will be needed if the mass of the vehicle is equal to 100 kg? A) 30. B) 3000. C) 0.03. D) 300. Show Answer Correct Answer: D) 300. 22. Identify the law:Birds and airplanes also fly by exerting force on the air in a direction opposite that of whatever force they need. For example, the wings of a bird force air downward and backward to get lift and move forward. A) Newton's 1st law of motion. B) Newton's 2nd law of motion. C) Newton's 3rd law of motion. D) None of the above. Show Answer Correct Answer: C) Newton's 3rd law of motion. 23. An object at rest will stay at rest and an object in motion will stay in motion at a constant velocity, unless acted on by an unbalanced force. A) Newton's first law. B) Newton's second law. C) Newton's third law. D) None of the above. Show Answer Correct Answer: A) Newton's first law. 24. A body moving in a circular path with constant speed has: A) Constant retardation. B) Variable acceleration. C) Radially outward acceleration. D) Constant acceleration. Show Answer Correct Answer: B) Variable acceleration. 25. A person is sitting in a lift accelerating upwards. Measured weight of person will be A) Equal to actual weight. B) Zero. C) More than actual weight. D) Less than actual weight. Show Answer Correct Answer: C) More than actual weight. 26. A machine gun fire n bullets per second and the mass of each bullet is m. If v is the speed of each bullet, then the force exerted on the machine gun is: ..... A) Mnvg. B) Mng. C) Mnv. D) (mnv)/g. Show Answer Correct Answer: C) Mnv. 27. What Unit do we Measure Force in? A) Joules. B) Force. C) Don't know. D) Newtons. Show Answer Correct Answer: D) Newtons. 28. If the mass of an object is tripled while the force remains constant, what happens to the acceleration? A) It is reduced to one-third. B) It is tripled. C) It is doubled. D) It remains the same. Show Answer Correct Answer: A) It is reduced to one-third. 29. Identify Newton's 3rd Law of Motion A) Every action has an equal but opposite reaction. B) The net force not equal to 0 N. C) The total net force. D) A push or a pull. Show Answer Correct Answer: A) Every action has an equal but opposite reaction. 30. You push against a wall and the wall is pushing back on you. A) Newton's 1st Law of Motion. B) Newton's 2nd Law of Motion. C) Newton's 3rd Law of Motion. D) None of the above. Show Answer Correct Answer: C) Newton's 3rd Law of Motion. 31. A force that resists or works against motion is A) Destruction. B) Gravity. C) Power. D) Friction. Show Answer Correct Answer: D) Friction. 32. What is the difference between mass and weight? A) Mass is how much matter is in an object, and weight is the gravitational pull on that object. B) Mass and weight are the same. C) Weight affects how much mass is in an object. D) Weight is determined by how many atoms make up an object. Show Answer Correct Answer: A) Mass is how much matter is in an object, and weight is the gravitational pull on that object. 33. If I slowly roll a ball down the hallway, why does it eventually stop? A) Because of Newton's First Law. B) Friction and Air Resistance. C) Inertia. D) It wouldn't stop, it would keep going until it hits a wwall. Show Answer Correct Answer: B) Friction and Air Resistance. 34. According to Newton's first law of motion, a moving object that is not acted on by an unbalanced force will A) Remain in motion. B) Eventually come to a stop. C) Accelerate in the absence of friction. D) None of the above. Show Answer Correct Answer: A) Remain in motion. 35. If an object is in motion it will remain ..... , unless an external force act on it. A) In motion. B) Weightless. C) Gravity. D) At rest. Show Answer Correct Answer: A) In motion. 36. If $\mu$$_{s}$, $\mu$$_{k}$ and $\mu$$_{r}$ are coefficients of static friction, sliding friction and rolling friction, then A) $\mu$$_{k}$ < $\mu$$_{r}$ < $\mu$$_{s}$. B) $\mu$$_{r}$ < $\mu$$_{k}$ < $\mu$$_{s}$. C) $\mu$$_{r}$ = $\mu$$_{k}$ = $\mu$$_{s}$. D) $\mu$$_{s }$< $\mu$$_{k }$< $\mu$$_{r}$. Show Answer Correct Answer: B) $\mu$$_{r}$ < $\mu$$_{k}$ < $\mu$$_{s}$. 37. Neglecting friction, which item needs a grater net force to move on a horizontal table, a kilogram of feathers or a kilogram of iron? A) Feathers. B) They both require the same amount of force. C) Iron. D) Neither will move. Show Answer Correct Answer: B) They both require the same amount of force. 38. The scientist who is most famous for developing the Laws of Motion is ..... A) Stephen Hawking. B) Galileo Galilei. C) Albert Einstein. D) Sir Isaac Newton. Show Answer Correct Answer: D) Sir Isaac Newton. 39. When you make a sharp turn while driving a car, you tend to lean sideways ..... This is an example for ..... A) Inertia of motion. B) Inertia of rest. C) Inertia of direction. D) None of the above. Show Answer Correct Answer: C) Inertia of direction. 40. When you stick your hand out of the window of a moving car you feel the air pushing on your hand. This is an example of ..... A) Fluid. B) Rolling. C) Static. D) Sliding. Show Answer Correct Answer: A) Fluid. 41. Which of the following has greatest inertia? A) Hammer. B) Coin. C) Feather. D) None of these. Show Answer Correct Answer: A) Hammer. 42. The force of attraction between any two objects A) Inertia. B) Force. C) Gravity. D) Average speed. E) Acceleration. Show Answer Correct Answer: C) Gravity. 43. A force of 6N acts on a body at rest and having a mass 4 kg. During the time of application of force, the body attains a velocity of 30 m/s. The time for which the force acts on the body is: A) 15 s. B) 5 s. C) 20 s. D) 10 s. Show Answer Correct Answer: C) 20 s. 44. $F\\propto\frac{\Delta p}{\Delta t}$ A) Newton's second law. B) Newton's law of gravitation. C) Newton's third law. D) Newton's first law. Show Answer Correct Answer: A) Newton's second law. 45. Motion is described as an object's ..... and ..... A) Up and down. B) Speed and direction. C) Height and weight. D) None of the above. Show Answer Correct Answer: B) Speed and direction. 46. In a billiards game, the action force is applied by the cue ball on another ball. In this case, which of the following exerts the reaction force? A) Billiards ball. B) Colored ball. C) Cue stick. D) Hand of the player. Show Answer Correct Answer: B) Colored ball. 47. F=MaAn object of mass 300 kg is observed to accelerate at the rate of 4 m/s$^{2}$. Calculate the force required to produce this acceleration. A) 75 N. B) .013 N. C) 2 N. D) 1200 N. Show Answer Correct Answer: D) 1200 N. 48. When did Isaac Newton first become interested in forces and motion? A) In college. B) When he met Mrs. Carter. C) In his old age. D) At birth. Show Answer Correct Answer: A) In college. 49. An example of Newton's third Law of Motion would be ..... A) When you push a wall, the wall doesn't push back. This would be an example of Newton's third law. B) When two objects collide, only the larger object experiences a force. This would be an example of Newton's third law. C) When you swim, you push the water backward with your arms and legs, the water pushing your forwards is newton's third law of motion. D) None of the above. Show Answer Correct Answer: C) When you swim, you push the water backward with your arms and legs, the water pushing your forwards is newton's third law of motion. 50. 2) Impulse is equals to A) Rate of change of momentum. B) Rate of force and time. C) Change of momentum. D) Rate of change of mass. Show Answer Correct Answer: C) Change of momentum. 51. A motor cycle racer takes a round with speed 20m/s in a curvature of radius of R= 40m, then the leaning angle of motor cycle for safe turn is (g=10m/s2) A) 45degree. B) 60degree. C) 30degree. D) 20 degree. Show Answer Correct Answer: A) 45degree. 52. APPLICATION:m = 10, 000 kg, F = 2000 N. What could be its acceleration due to net force? A) A = 200 m/s$^{2}$. B) A = 20 m/s$^{2}$. C) A = 0.20 m/s$^{2}$. D) A = 0.02 m/s$^{2}$. Show Answer Correct Answer: C) A = 0.20 m/s$^{2}$. 53. ..... is the study of moving bodies under the action of forces. A) Mechanics. B) Statics. C) Dynamics. D) Optics. Show Answer Correct Answer: C) Dynamics. 54. A fireman turns on his hose and is knocked backwards is an example of ..... A) Newton's 1st Law. B) Newton's 3rd Law. C) Newton's 4rth Law. D) Newton's 2nd Law. Show Answer Correct Answer: B) Newton's 3rd Law. 55. Newton's Third Law says that every time there is an action force, there is also a reaction force that is ..... in size and acts in the ..... direction. A) Lesser, same. B) Equal, opposite. C) Greater, different. D) Opposite, equal. Show Answer Correct Answer: B) Equal, opposite. 56. Identify which law applies:When Jane drives to work, she always places her purse on the passenger's seat. By the time she gets to work, her purse has fallen on the floor in front of the passenger seat. A) Newton's 1st law of motion. B) Newton's 2nd law of motion. C) Newton's 3rd law of motion. D) None of the above. Show Answer Correct Answer: A) Newton's 1st law of motion. 57. Two students pull on a rope with 100 N in opposite directions. If the student on the left increased her force to 125 N, the rope would MOST likely ..... A) Go from motionless to leftward acceleration. B) Decrease its rightward acceleration. C) Decrease its leftward acceleration. D) Go from rightward acceleration to leftward acceleration. Show Answer Correct Answer: A) Go from motionless to leftward acceleration. 58. According to Newton's Second Law of Motion, what happens to the acceleration of an object if the mass is halved while the force remains constant? A) The acceleration is quadrupled. B) The acceleration is halved. C) The acceleration remains the same. D) The acceleration is doubled. Show Answer Correct Answer: D) The acceleration is doubled. 59. Which of the following is not a type of friction? A) Gravity. B) Sliding. C) Rolling. D) Static. Show Answer Correct Answer: A) Gravity. 60. What is the name of Newton's 3rd Law of Motion? A) Law of Force and Acceleration. B) Law of Inertia. C) Law of Action / Reaction. D) None of the above. Show Answer Correct Answer: C) Law of Action / Reaction. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Physics (Part I) Chapter 3 Laws Of Motion Quiz 1Class 11 Physics (Part I) Chapter 3 Laws Of Motion Quiz 2Class 11 Physics (Part I) Chapter 3 Laws Of Motion Quiz 3Class 11 Physics (Part I) Chapter 3 Laws Of Motion Quiz 4Class 11 Physics (Part I) Chapter 3 Laws Of Motion Quiz 5Class 11 Physics (Part I) Chapter 3 Laws Of Motion Quiz 6Class 11 Physics (Part I) Chapter 3 Laws Of Motion Quiz 7Class 11 Physics (Part I) Chapter 3 Laws Of Motion Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books