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 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 3 Laws Of Motion Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What unit to you use (in a science class) for force? A) Kilograms (kg). B) Einsteins (E). C) Newtons (N). D) Meters per Second (m/s). Show Answer Correct Answer: C) Newtons (N). 2. Which law is known as the Law of Inertia? 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. 3. Inertia (the tendency of an object to resist a change in its motion) is included in which law of motion? A) 1st Law of Motion. B) 2nd Law of Motion. C) 3rd Law of Motion. D) None of the above. Show Answer Correct Answer: A) 1st Law of Motion. 4. An impulse depends on A) Weight and force. B) Force and time. C) Electric charge and time. D) None of these. Show Answer Correct Answer: B) Force and time. 5. A man weighing W is standing in a lift which is moving upwards with an acceleration a. The apparent weight of the man: A) W. B) W ( g + a ) /g. C) W ( a-g ) a. D) W ( g-a) / g. Show Answer Correct Answer: B) W ( g + a ) /g. 6. What is the mass of the body if the exerted force of 10N is accelerated by 5 m/s$^{2}$? A) 2.8kg. B) 3.2kg. C) 2.5kg. D) 2kg. Show Answer Correct Answer: D) 2kg. 7. What is always required to overcome inertia? A) Force of friction. B) Force of gravity. C) Unbalanced force. D) None of the above. Show Answer Correct Answer: C) Unbalanced force. 8. Which property of an object determines how much inertia it has? A) Velocity. B) Force. C) Mass. D) Acceleration. Show Answer Correct Answer: C) Mass. 9. One kilogram force equals to A) 980 dyne. B) 9.8 x 10$^{4}$ N. C) 98 x 10$^{4}$ dyne. D) 9.8 dyne. Show Answer Correct Answer: C) 98 x 10$^{4}$ dyne. 10. 1gf = how many dyne? A) 980 dyne. B) 985 dyne. C) 600 dyne. D) 1000 dyne. Show Answer Correct Answer: A) 980 dyne. 11. Which of the Newton's Laws describes the amount of force applied to accelerate an object's mass? A) Newton's First law. B) Newton's Third Law. C) Newton's Second law. D) Newton's Fourth Law. Show Answer Correct Answer: C) Newton's Second law. 12. A person is pushed forward into their seat belt when a car stops. Which law does this best illustrate? A) 1st inertia. B) 2nd acceleration. C) 2 and 3 acceleration and action/reaction. D) 3rd action/reaction. Show Answer Correct Answer: A) 1st inertia. 13. Which law of motion explains the tendency of an object to remain still unless acted upon by a force? A) First. B) Second. C) Third. D) None of the above. Show Answer Correct Answer: A) First. 14. True or False. Our mass would change on a different planet. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 15. In which situation is the object experiencing balanced forces? A) A girl swings on a swing at the playground. B) A car brakes as it approaches a traffic light. C) A sky diver reaches terminal velocity when he stops accelerating. D) A sled speeds up as it slides down a snow-covered hill. Show Answer Correct Answer: C) A sky diver reaches terminal velocity when he stops accelerating. 16. A push or pull that can change the motion of an object. A) Force. B) Velocity. C) Acceleration. D) Friction. Show Answer Correct Answer: A) Force. 17. Newton's Third Law says that forces must always occur in ..... A) Pairs. B) Friction. C) Groups of 20 or more. D) Individual circumstances. Show Answer Correct Answer: A) Pairs. 18. An object at rest stays at rest or an object in motion stays in motion until unbalanced forces act upon it. A) Newton's First Law of Motion. B) Newton's Third Law of Motion. C) Newton's Second Law of Motion. D) None of the above. Show Answer Correct Answer: A) Newton's First Law of Motion. 19. A body, under the action of a force F = 6i-8j+10k, acquires an acceleration of 1m/s$^{2}$. The mass of this body must A) 20 kg. B) 10 $\sqrt{2}$. C) 10 kg. D) $2\sqrt{10}$. Show Answer Correct Answer: B) 10 $\sqrt{2}$. 20. Two forces are applied to a wooden box as shown below. Which statement BEST describes the effect these forces have on the box? A) The box moves straight up. B) The box moves to the left. C) The box does not move. D) The box moves to the right. Show Answer Correct Answer: B) The box moves to the left. 21. What is 3rd law of motion? A) Every action there is an equal and opposite reaction. B) An object at rest stays at rest. C) Unbalanced forces are important. D) None of the above. Show Answer Correct Answer: A) Every action there is an equal and opposite reaction. 22. Luis pushes a 50 pound box across the room. Christian pushes a 5 pound box across the same room. Who needs to use more force? A) Luis. B) Christian. C) Neither one. D) Both of them. Show Answer Correct Answer: A) Luis. 23. A balloon is accelerating upward. What is this an example of? A) 1st Law of Motion. B) 2nd Law of Motion. C) 3rd Law of Motion. D) None of the above. Show Answer Correct Answer: C) 3rd Law of Motion. 24. You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with ..... of force. A) 70N. B) 20N. C) 10N. D) 40N. Show Answer Correct Answer: B) 20N. 25. If Mrs. Dircks dropped her Pepsi bottle, what is the force that pulls the bottle to the ground? A) Friction. B) Air resistance. C) Motion. D) Gravity. Show Answer Correct Answer: D) Gravity. 26. What is an unbalanced force? A) Something that causes no motion. B) Tendency of an object to resist a change in its motion. C) When there is an equal amount of force on each side. D) Something that causes motion. Show Answer Correct Answer: D) Something that causes motion. 27. The action is gravity pulling you to the center of the earth. What is the reaction A) The chair pushing you up. B) A balanced force. C) You falling in a bottomless pit to the center of the earth. D) An unbalanced force. Show Answer Correct Answer: A) The chair pushing you up. 28. According to Newton's Second Law of Motion, an object in motion will ..... A) Spontaneously combust. B) Stay in motion. C) Want to stop right away. D) Go to the Moon!. Show Answer Correct Answer: B) Stay in motion. 29. A lift is moving from the ground floor to the third floor in a multistoried building. What will happen to the weight of a person in lift, when it starts to move up A) W = m(g-a). B) W = 0. C) W = mg. D) W = m(g+a). Show Answer Correct Answer: D) W = m(g+a). 30. Shooting A Cannon is an example of what law of motion? A) 2nd Law of Motion. B) 3rd Law of motion. C) 1st law of motion. D) None of the above. Show Answer Correct Answer: B) 3rd Law of motion. 31. The car is described as traveling east at 30 km/hr. From which reference point in the diagram is the motion of the car MOST likely being described? A) 4. B) 3. C) 2. D) 1. Show Answer Correct Answer: A) 4. 32. A man drops an apple in the lift. He finds that the apple remains stationary and does not fall . The lift is: ..... A) Going up with constant speed. B) Going down with constant acceleration equal to g. C) Going down with constant speed. D) Going up with constant acceleration. Show Answer Correct Answer: B) Going down with constant acceleration equal to g. 33. When Bobby, age 5, and his dad are skipping pebbles on the pond, the pebbles that Bobby's dad throws go farther and faster then his. A) Newton's first law. B) Newton's second law. C) Newton's third law. D) None of the above. Show Answer Correct Answer: B) Newton's second law. 34. Is the tendency of a body to resist a change in motion or rest. A) Inertia. B) Acceleration. C) Interaction. D) None of the above. Show Answer Correct Answer: A) Inertia. 35. Who developed the 3 laws of motion? A) Charles Darwin. B) Sir Isaac Newton. C) Bill Nye. D) Mr. Fig Newton. Show Answer Correct Answer: B) Sir Isaac Newton. 36. Inertia of a body depends on: A) Weight of the object. B) Acceleration due to gravity of the planet. C) Mass of the object. D) Both (a) & (b). Show Answer Correct Answer: C) Mass of the object. 37. If a 50-kilogram student is pushed in a rolling chair with a force of 20 N, what is the student's acceleration? A) 1, 000 m/s$^{2}$. B) 2.5 m/s$^{2}$. C) 4.0 m/s$^{2}$. D) 0.40 m/s$^{2}$. Show Answer Correct Answer: D) 0.40 m/s$^{2}$. 38. In the equation F=ma, the m stand for ..... A) The forces acting on an object. B) The object's weight. C) The object's mass. D) The acceleration of the object. Show Answer Correct Answer: C) The object's mass. 39. If Hank is near hole 9, he will need to use a ..... amount of force so that the ball doesn't roll past hole 9. A) Small. B) Large. C) Equal. D) Crazy. Show Answer Correct Answer: A) Small. 40. A 3, 000 kg truck moving at +10 m/s hits a 1, 000 kg parked car which moves off at +15 m/s. What is the velocity of the truck? A) 10 m/s. B) 5 m/s. C) 0 m/s. D) 2 m/s. Show Answer Correct Answer: B) 5 m/s. 41. COMPREHENSION:You are to adjust to a new environment but you want to resist the changes because you are stable and steady in your position. What law is being exhibited by this situation? A) Law of Motion. B) Law of Acceleration. C) Law of Interaction. D) Law of Inertia. Show Answer Correct Answer: D) Law of Inertia. 42. Which law best describes the International Space Station continually orbiting the earth? 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. 43. A car, initially at rest reaches a velocity of 50 km/hr in 10 seconds, this is an example of A) Positive acceleration. B) Deceleration. C) Zero acceleration. D) None of the above. Show Answer Correct Answer: A) Positive acceleration. 44. COMPREHENSION:Swimming is possible by 'slicing' the water and pushing it with your hands. What law of motion can explain this occurrence? A) Law of Motion. B) Law of Acceleration. C) Law of Interaction. D) Law of Inertia. Show Answer Correct Answer: C) Law of Interaction. 45. A ball rolling across the floor with friction acting in the opposite direction will affect its motion. What is this an example of? A) 1st Law of Motion. B) 2nd Law of Motion. C) 3rd Law of Motion. D) None of the above. Show Answer Correct Answer: A) 1st Law of Motion. 46. It is the study of forces that cause objects and systems to move. A) Inertia. B) Motion. C) Dynamics. D) Force. Show Answer Correct Answer: C) Dynamics. 47. The swimmer moves her hand down and to the left and her body goes forward to the right. A) Newton's 1st Law. B) Newton's 2nd Law. C) Newton's 3rd Law. D) None of the above. Show Answer Correct Answer: C) Newton's 3rd Law. 48. An ice skater at rest pushes against a sled at rest, causing both the skater and sled to move away from each other with different accelerations. This is an example best described by A) Newton's second law of motion. B) Newton's first law of motion for objects at rest. C) Newton's third law of motion. D) Newton's first law of motion for objects in motion. Show Answer Correct Answer: A) Newton's second law of motion. 49. F=MA Going down a hill a 12 kg sled has a force of 36 N. What is it's acceleration? A) 3 m/s2. B) 2 m/s2. C) 0.33 m/s2. D) 432 m/s2. Show Answer Correct Answer: A) 3 m/s2. 50. N unbalanced force applied to push a stuffed chair across the room, causing an acceleration of 4.2 m/s2. What is the mass of the chair? A) 263.3 kg. B) 26.75 kg. C) 63.69 kg. D) 1123.5 kg. Show Answer Correct Answer: C) 63.69 kg. 51. Max. permissible speed on a banked road is:- A) $\sqrt{\mu rg}$. B) V = $\sqrt{\frac{rg\left(\mu-\tan\theta\right)}{1+\mu\tan\theta}}$. C) V = $\sqrt{\frac{rg\left(\tan\theta+\mu\right)}{1-\mu\tan\theta}}$. D) V = $\sqrt{rg\tan\theta}$. Show Answer Correct Answer: C) V = $\sqrt{\frac{rg\left(\tan\theta+\mu\right)}{1-\mu\tan\theta}}$. 52. A pitched baseball goes faster than one that is gently thrown. A) 1st law. B) 2nd law. C) 3rd law. D) None of the above. Show Answer Correct Answer: B) 2nd law. 53. A hiker's velocity begins at 1.8 m/s uphill and changes to 1.5 m/s uphill. How do you know that the hiker has a negative acceleration? A) His direction was unchanged. B) His speed decreased. C) His speed increased. D) His direction changed. Show Answer Correct Answer: B) His speed decreased. 54. A machine gun fires a bullet of mass 40 g with a velocity of 1200 ms$^{-1}$. The man holding it can exert a maximum force of 144 N on the gun. How many bullets can he fire per second at the most? A) 3. B) 1. C) 4. D) 2. Show Answer Correct Answer: A) 3. 55. What is the unit of force in the International System of Units (SI)? A) Joule. B) Watt. C) Pascal. D) Newton. Show Answer Correct Answer: D) Newton. 56. Which of the following is an example of Newton's First Law? A) A book sliding on a table eventually stops. B) A swimmer pushes water backward to move forward. C) A car accelerates faster when more force is applied. D) A ball thrown in space continues moving indefinitely. Show Answer Correct Answer: D) A ball thrown in space continues moving indefinitely. 57. A person is pushed forward into their seatbelt when a car stops. Which of Newton's laws explains this motion? A) 1st law. B) 2nd law. C) 2 and 3 law. D) 3rd law. Show Answer Correct Answer: A) 1st law. 58. On a stationary sail boat, air is blown from a fan attached to the boat. The boat A) Does not move. B) Moves in the same direction in which air blows. C) Moves in opposite direction in which the air is blown. D) Spins around. Show Answer Correct Answer: A) Does not move. 59. When a bus starts suddenly, the passengers are pushed back. This is an example of which of the following? A) Newton's second law. B) Newton's first law. C) Newton's third law. D) None of above. Show Answer Correct Answer: B) Newton's first law. 60. If the change of momentum of an object is 50kg m/s, we can say the impulse is equal to: A) 50 kg m/s. B) 25 kg m/s. C) 100 kg m/s. D) 0 kg m/s. Show Answer Correct Answer: A) 50 kg m/s. ← 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 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 8Class 11 Physics (Part I) Chapter 3 Laws Of Motion Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books