MDCAT Force and Motion MCQs

This comprehensive set of MCQs on Force and Motion is designed to cover all essential topics required for success in the Medical and Dental College Admission Test (MDCAT). Focused on key subjects such as Newton’s Laws of Motion, Kinematics, Dynamics, and the Laws of Conservation of Momentum and Energy, these MCQs are crafted to help aspiring medical and dental students build a solid understanding of fundamental physics and its applications in health sciences.

Who should practice Force and Motion MCQs?

Students preparing for the MDCAT who wish to deepen their understanding of the principles of force and motion, which are fundamental to biomechanics and medical technologies.
Individuals seeking to enhance their knowledge of motion analysis, projectile motion, and the effects of forces, crucial for various applications in medical physics.
University students targeting high-yield topics like the relationship between force, acceleration, and mass, and their relevance to the human body and medical devices.
Anyone aiming to strengthen their foundational understanding of force, energy, and motion and their implications in human health and everyday life.
Candidates focused on developing critical thinking and analytical skills related to solving physics problems and applying physical laws to real-world medical scenarios.

1. What is displacement in physics?

A) The total path length covered by an object
B) The shortest distance between the initial and final positions
C) The rate of change of velocity
D) The force exerted on an object

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2. Which of the following is a vector quantity?

A) Distance
B) Speed
C) Displacement
D) Time

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3. What is the SI unit of displacement?

A) Meter
B) Kilogram
C) Second
D) Newton

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4. Velocity is defined as:

A) Distance traveled per unit time
B) Displacement per unit time
C) Speed in any direction
D) The rate of change of acceleration

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5. The slope of a displacement-time graph represents:

A) Acceleration
B) Displacement
C) Velocity
D) Force

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6. What does a straight line on a displacement-time graph indicate?

A) Uniform velocity
B) Acceleration
C) Uniform acceleration
D) Constant speed

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7. How is acceleration defined in physics?

A) The rate of change of displacement
B) The rate of change of velocity
C) The total distance covered by an object
D) The force applied on an object

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8. What is uniform acceleration?

A) Acceleration that decreases over time
B) Acceleration that remains constant over time
C) Acceleration that changes with velocity
D) Acceleration that is zero

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9. In a velocity-time graph, what does the slope represent?

A) Velocity
B) Time
C) Displacement
D) Acceleration

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10. What type of motion occurs when acceleration is variable?

A) Uniform motion
B) Non-uniform motion
C) Stationary motion
D) Projectile motion

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11. Newton’s First Law of Motion is also known as:

A) Law of inertia
B) Law of acceleration
C) Law of gravitation
D) Law of momentum

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12. Which of the following statements describes Newton’s First Law?

A) A body at rest will remain at rest, and a body in motion will remain in motion unless acted upon by an external force
B) The rate of change of momentum is directly proportional to the applied force
C) For every action, there is an equal and opposite reaction
D) Acceleration is inversely proportional to mass

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13. Newton’s Second Law of Motion relates force to:

A) Displacement and time
B) Mass and acceleration
C) Speed and velocity
D) Momentum and inertia

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14. What is the formula given by Newton’s Second Law of Motion?

A) F = ma
B) F = mv
C) F = mgh
D) F = mg

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15. According to Newton’s Third Law of Motion, for every action there is:

A) An equal and opposite reaction
B) An unequal and opposite reaction
C) No reaction
D) An increase in velocity

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16. What is linear momentum?

A) The mass of an object multiplied by its velocity
B) The force acting on an object
C) The displacement per unit time
D) The acceleration of an object

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17. What is the SI unit of linear momentum?

A) Newton-second
B) Kilogram
C) Meter per second
D) Joule

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18. The Law of Conservation of Momentum states that:

A) Momentum can be created or destroyed
B) Momentum is always zero
C) Momentum remains constant in an isolated system
D) Momentum increases with time

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19. In an elastic collision, the total kinetic energy:

A) Remains constant
B) Increases
C) Decreases
D) Is converted into heat

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20. Which of the following is an example of an elastic collision?

A) Two cars colliding and sticking together
B) A ball bouncing off a wall
C) A block sliding down a slope
D) A rocket launching into space

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21. In an elastic collision in one dimension, the velocities of the colliding objects:

A) Are unchanged after the collision
B) Change, but total kinetic energy remains constant
C) Decrease to zero
D) Increase exponentially

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22. Which of the following is true in projectile motion?

A) The horizontal velocity remains constant
B) The vertical velocity remains constant
C) The acceleration is zero
D) The object moves in a straight line

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23. What is the shape of the trajectory in projectile motion?

A) Circular
B) Parabolic
C) Elliptical
D) Linear

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24. Time of flight in projectile motion depends on:

A) Horizontal velocity
B) Vertical displacement
C) Initial velocity and angle of projection
D) Mass of the object

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25. What is the formula for maximum height in projectile motion?

A) H = (u² sin²θ) / 2g
B) H = u² / 2g
C) H = (u sin θ) / g
D) H = u² / g

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26. The horizontal range of a projectile is maximum when the angle of projection is:

A) 30°
B) 45°
C) 60°
D) 90°

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27. The horizontal range of a projectile is:

A) Independent of the initial velocity
B) Directly proportional to the square of the initial velocity
C) Inversely proportional to the initial velocity
D) Dependent only on the mass of the object

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28. A projectile is fired with a velocity of 20 m/s at an angle of 30°. What is its horizontal velocity?

A) 10 m/s
B) 20 m/s
C) 17.32 m/s
D) 5 m/s

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29. Which of the following remains constant in projectile motion?

A) Vertical velocity
B) Horizontal velocity
C) Acceleration
D) Time of flight

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30. In Newton’s Second Law, the greater the force applied to an object:

A) The greater the velocity
B) The greater the acceleration
C) The smaller the acceleration
D) The smaller the velocity

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31. The rate of change of momentum is equal to:

A) Velocity
B) Force
C) Acceleration
D) Displacement

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32. What is the unit of acceleration?

A) m/s
B) m/s²
C) m²/s
D) kg/m

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33. If an object’s velocity changes at a constant rate, what kind of acceleration does it have?

A) Variable acceleration
B) Uniform acceleration
C) Zero acceleration
D) Decreasing acceleration

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34. When no net external force acts on a system, the total momentum remains:

A) Constant
B) Increasing
C) Decreasing
D) Zero

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35. The slope of a velocity-time graph represents:

A) Velocity
B) Displacement
C) Force
D) Acceleration

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36. An object moving with uniform velocity has:

A) Constant speed and direction
B) Changing speed but constant direction
C) Constant speed but changing direction
D) Changing speed and direction

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37. If an object moves in a straight line with constant speed, its acceleration is:

A) Positive
B) Negative
C) Zero
D) Infinite

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38. What is the area under a velocity-time graph?

A) Acceleration
B) Velocity
C) Displacement
D) Momentum

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39. What happens when two objects collide elastically?

A) They lose kinetic energy
B) They stick together
C) Their total kinetic energy remains the same
D) Their momentum decreases

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40. In which of the following scenarios does Newton’s First Law apply?

A) A car accelerating on the highway
B) A ball rolling on a frictionless surface
C) A rocket in space experiencing thrust
D) A stone falling freely under gravity

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41. Which of the following quantities is conserved during an elastic collision?

A) Momentum only
B) Kinetic energy only
C) Both momentum and kinetic energy
D) Force

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42. What is the main factor that affects the range of a projectile?

A) The mass of the object
B) The horizontal velocity
C) The angle of projection
D) The gravitational force

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43. In projectile motion, acceleration due to gravity acts:

A) Vertically upward
B) Vertically downward
C) Horizontally
D) At an angle to the trajectory

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44. If the mass of an object is doubled, what happens to its momentum?

A) It remains the same
B) It doubles
C) It halves
D) It decreases exponentially

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45. Which of the following statements about momentum is true?

A) Momentum is always conserved
B) Momentum is a scalar quantity
C) Momentum depends on both mass and velocity
D) Momentum is always zero

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46. If the velocity of an object doubles, its momentum:

A) Remains the same
B) Doubles
C) Halves
D) Triples

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47. What kind of motion does a car moving at a constant speed on a straight road exhibit?

A) Uniform motion
B) Accelerated motion
C) Variable acceleration
D) Uniformly accelerated motion

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48. When an object is thrown upward, what is its acceleration at the highest point?

A) Zero
B) 9.8 m/s² upward
C) 9.8 m/s² downward
D) Constant and horizontal

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49. What does Newton’s Third Law of Motion imply when a book is placed on a table?

A) The book exerts a force on the table, and the table exerts an equal force on the book
B) The book only exerts force downward
C) The table exerts force but the book doesn’t
D) The forces cancel each other out

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50. When a force is applied to an object, causing it to move, what kind of energy is transferred?

A) Potential energy
B) Kinetic energy
C) Thermal energy
D) Chemical energy

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51. What happens to the velocity of a projectile at its maximum height?

A) Vertical velocity is zero
B) Horizontal velocity is zero
C) Total velocity is zero
D) Velocity doubles

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52. What is the vertical acceleration of a projectile in free fall?

A) 0 m/s²
B) 9.8 m/s²
C) -9.8 m/s²
D) 4.9 m/s²

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53. If the net force acting on an object is zero, the object is in:

A) Uniform motion
B) Equilibrium
C) Accelerated motion
D) Projectile motion

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54. In projectile motion, what is the relationship between the horizontal and vertical components of motion?

A) They are independent of each other
B) They depend on each other
C) Horizontal motion determines vertical motion
D) Vertical motion determines horizontal motion

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55. What is the initial vertical velocity of a horizontally launched projectile?

A) 0 m/s
B) 9.8 m/s
C) Equal to its horizontal velocity
D) Infinity

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56. What is the formula for the time of flight in projectile motion?

A) t = 2u sin θ / g
B) t = u cos θ / g
C) t = 2u cos θ / g
D) t = u sin θ / g

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57. A ball thrown vertically upward comes back to the thrower’s hand. What remains constant during its motion?

A) Horizontal velocity
B) Kinetic energy
C) Momentum
D) Mass

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58. In a perfectly elastic collision, the objects:

A) Stick together after collision
B) Retain their original shapes
C) Exchange velocities
D) Lose all kinetic energy

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59. The acceleration of an object is directly proportional to:

A) Its mass
B) The force acting on it
C) The distance covered
D) The time taken

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60. What is the horizontal range of a projectile dependent on?

A) Initial velocity only
B) Initial velocity and angle of projection
C) Mass of the projectile
D) Gravity only

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61. In projectile motion, what is the horizontal acceleration of the projectile?

A) 9.8 m/s²
B) Zero
C) -9.8 m/s²
D) Variable

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62. The law of conservation of momentum is valid in:

A) Elastic collisions only
B) Inelastic collisions only
C) Both elastic and inelastic collisions
D) Neither type of collision

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63. Which of the following represents Newton’s second law of motion?

A) F = ma
B) F = mv
C) F = mgh
D) F = m/v

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64. The time taken by a projectile to reach its maximum height depends on:

A) Its initial velocity and angle of projection
B) Its mass
C) The gravitational pull
D) The horizontal velocity only

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65. The total momentum of a closed system after a collision is equal to:

A) Its initial momentum
B) Its final velocity
C) The product of its mass and acceleration
D) Zero

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66. In which type of collision is kinetic energy conserved?

A) Elastic collision
B) Inelastic collision
C) Perfectly inelastic collision
D) Explosive collision

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67. What does the slope of a displacement-time graph represent?

A) Velocity
B) Acceleration
C) Displacement
D) Force

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68. The range of a projectile is maximum when the angle of projection is:

A) 30°
B) 45°
C) 60°
D) 90°

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69. If two objects collide inelastically, which of the following remains conserved?

A) Kinetic energy
B) Momentum
C) Force
D) Speed

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70. What does Newton’s first law of motion describe?

A) Inertia
B) Acceleration
C) Momentum
D) Force

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71. Which of the following forces acts perpendicular to the surface of an object?

A) Frictional force
B) Gravitational force
C) Normal force
D) Tension

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72. What is the velocity of a projectile at the top of its trajectory?

A) Equal to its initial velocity
B) Zero
C) Equal to its horizontal velocity
D) Negative

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73. If two objects collide and stick together, the collision is:

A) Elastic
B) Inelastic
C) Superelastic
D) Gravitational

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74. Which quantity is conserved when a body is rotating in a frictionless environment?

A) Linear momentum
B) Rotational kinetic energy
C) Angular momentum
D) Potential energy

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75. What happens to the velocity of an object if the force acting on it is doubled?

A) It doubles
B) It remains the same
C) It halves
D) It increases at a decreasing rate

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76. The formula for the horizontal range of a projectile is:

A) R = u² sin(2θ) / g
B) R = u² cos(2θ) / g
C) R = u sin² θ / g
D) R = u² / 2g

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77. When a car suddenly stops, the passengers tend to lurch forward due to:

A) Momentum
B) Inertia
C) Force
D) Gravity

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78. What is the change in velocity per unit time called?

A) Momentum
B) Speed
C) Displacement
D) Acceleration

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79. Newton’s third law of motion states that for every action there is:

A) No reaction
B) An equal and opposite reaction
C) A force proportional to displacement
D) Zero force

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80. In uniform circular motion, which of the following remains constant?

A) Speed
B) Velocity
C) Acceleration
D) Force

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81. In an elastic collision between two objects, the relative velocity of separation is:

A) Equal to the relative velocity of approach
B) Less than the relative velocity of approach
C) Greater than the relative velocity of approach
D) Zero

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82. The maximum height of a projectile depends on which of the following?

A) The angle of projection only
B) The initial velocity and angle of projection
C) The mass of the projectile
D) The horizontal velocity

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83. The law of conservation of momentum applies to:

A) Only elastic collisions
B) Only inelastic collisions
C) Both elastic and inelastic collisions
D) Only when external forces are acting

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84. The displacement of an object is zero when:

A) The object travels in a straight line
B) The initial and final positions of the object are the same
C) The object is in uniform motion
D) The object has uniform acceleration

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85. What is the velocity of an object in free fall just before hitting the ground?

A) Zero
B) Maximum
C) Half of its initial velocity
D) Equal to its mass

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86. The force that causes a moving object to resist changes in its state of motion is:

A) Gravitational force
B) Normal force
C) Frictional force
D) Inertia

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87. When an object is projected horizontally, what is the vertical component of its initial velocity?

A) Equal to the horizontal component
B) Zero
C) Half of the horizontal velocity
D) Equal to gravitational acceleration

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88. What is the rate of change of momentum known as?

A) Force
B) Velocity
C) Acceleration
D) Displacement

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89. A projectile is launched at an angle of 45°. How do its horizontal and vertical velocities compare at the point of launch?

A) Horizontal velocity is greater
B) Vertical velocity is greater
C) Both are equal
D) Vertical velocity is zero

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90. A projectile reaches its maximum height when:

A) Its vertical velocity is zero
B) Its horizontal velocity is zero
C) Its velocity is at a minimum
D) Its acceleration is zero

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91. In a perfectly inelastic collision, what happens to the kinetic energy?

A) It is completely conserved
B) It is partially conserved
C) It is completely lost
D) It remains constant

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92. Which of the following is true for an object in uniform motion?

A) Its acceleration is increasing
B) Its velocity is constant
C) Its displacement is zero
D) Its speed decreases with time

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93. What is the horizontal velocity of a projectile throughout its flight (ignoring air resistance)?

A) It increases
B) It decreases
C) It remains constant
D) It becomes zero at maximum height

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94. If an object is projected horizontally, what is its vertical displacement after 1 second?

A) 4.9 m
B) 9.8 m
C) 19.6 m
D) 0 m

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95. What is the nature of the path followed by a projectile?

A) Linear
B) Circular
C) Parabolic
D) Elliptical

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96. When is the horizontal range of a projectile equal to zero?

A) When it is projected vertically
B) When it is projected horizontally
C) When its angle of projection is 45°
D) When it hits the ground

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97. In Newton’s second law of motion, what is the proportional relationship between force and acceleration?

A) Directly proportional
B) Inversely proportional
C) Exponentially related
D) Unrelated

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98. What is the unit of linear momentum?

A) Newton-second
B) Joule
C) Newton per meter
D) Watt

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99. The maximum height attained by a projectile is directly proportional to:

A) The square of its initial velocity
B) The angle of projection
C) Its horizontal velocity
D) The time of flight

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100. Which of the following is conserved in all types of collisions?

A) Kinetic energy
B) Potential energy
C) Linear momentum
D) Speed

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