1. The rate of change of position of a body is called —
A) Speed
B) Velocity
C) Acceleration
D) Displacement
Answer: B)
Explanation: Velocity is defined as the rate of change of position of a body with respect to time.
2. The shortest distance between the initial and final position of an object is —
A) Path length
B) Distance
C) Displacement
D) Velocity
Answer: C)
Explanation: Displacement is the vector quantity showing shortest distance between initial and final position.
3. A body is said to be in motion if it changes its —
A) Shape
B) Position
C) Direction
D) Both B and C
Answer: D)
Explanation: Motion occurs when a body changes position or direction with respect to time.
4. The S.I. unit of speed is —
A) km/h
B) m/s
C) m/s²
D) m²/s
Answer: B)
Explanation: Speed = Distance/Time → S.I. units = meters/second (m/s).
5. Velocity is a —
A) Scalar quantity
B) Vector quantity
C) Unitless quantity
D) Dimensionless quantity
Answer: B)
Explanation: Velocity has both magnitude and direction, hence it is a vector.
6. Acceleration is defined as —
A) Change in speed per unit time
B) Change in velocity per unit time
C) Change in displacement per unit time
D) Distance per unit time
Answer: B)
Explanation: a=v−uta = \frac{v – u}{t}a=tv−u
7. The S.I. unit of acceleration is —
A) m/s
B) m/s²
C) m²/s
D) km/h
Answer: B)
Explanation: Acceleration = change in velocity/time → units = (m/s)/s = m/s².
8. If a body moves equal distances in equal intervals of time, it is said to be in —
A) Uniform motion
B) Non-uniform motion
C) Accelerated motion
D) Retarded motion
Answer: A)
Explanation: In uniform motion, speed remains constant.
9. A car moves with constant speed but changes direction. Its motion is —
A) Uniform linear
B) Accelerated
C) Static
D) Non-uniform
Answer: D)
Explanation: While the car maintains a constant speed, its changing direction means its velocity is changing, making it non-uniform motion.
10. When velocity decreases with time, acceleration is —
A) Positive
B) Negative
C) Zero
D) Constant
Answer: B)
Explanation: Negative acceleration is called retardation or deceleration.
11. Distance–time graph of uniform motion is —
A) Curved line
B) Straight line
C) Parabolic
D) Horizontal line
Answer: B)
Explanation:Constant speed gives a straight line on a distance–time graph.
12. Slope of a velocity–time graph gives —
A) Speed
B) Distance
C) Acceleration
D) Displacement
Answer: C)
Explanation:slope=ΔvΔt=a\text{slope} = \frac{\Delta v}{\Delta t} = aslope=ΔtΔv=a
13. The area under a velocity–time graph represents —
A) Acceleration
B) Displacement
C) Force
D) Power
Answer: B)
Explanation:Area = velocity × time = displacement.
14. If a car moves with uniform velocity, then —
A) Acceleration is zero
B) Speed increases
C) Speed decreases
D) Distance decreases
Answer: A)
Explanation:Constant velocity means no change → acceleration = 0.
15. The motion of a freely falling object is an example of —
A) Uniform motion
B) Uniform acceleration
C) Non-uniform speed
D) Constant velocity
Answer: B)
Explanation:Gravity provides constant acceleration g=9.8 m/s2g = 9.8 \, m/s^2g=9.8m/s2.
16. The acceleration due to gravity on Earth is —
A) 8.9 m/s²
B) 9.8 m/s²
C) 10.8 m/s²
D) 8.0 m/s²
Answer: B)
Explanation: Average value of ggg = 9.8 m/s².
17. Equation of motion: v=u+atv = u + atv=u+at gives —
A) Final velocity
B) Initial velocity
C) Distance
D) Energy
Answer: A)
Explanation: It gives final velocity vvv after time ttt for acceleration aaa.
18. Equation s=ut+½at2s = ut + ½at²s=ut+½at2 gives —
A) Velocity
B) Acceleration
C) Displacement
D) Force
Answer: C)
Explanation: It represents displacement in uniformly accelerated motion.
19. Equation v2=u2+2asv² = u² + 2asv2=u2+2as relates —
A) Distance and time
B) Velocity and acceleration
C) Displacement and velocity
D) Force and mass
Answer: C)
Explanation: It gives relation among u,v,a,su, v, a, su,v,a,s.
20. The motion of planets around the Sun is —
A) Linear motion
B) Circular motion
C) Oscillatory motion
D) Random motion
Answer: B)
Explanation:Planets move around the Sun in nearly circular or elliptical orbits.
21. Which of the following quantities can be negative?
A) Speed
B) Distance
C) Displacement
D) Mass
Answer: C)
Explanation:Displacement is a vector; it can be positive, negative, or zero depending on direction.
22. Which of the following always remains positive?
A) Velocity
B) Displacement
C) Speed
D) Acceleration
Answer: C)
Explanation:Speed is scalar and cannot be negative.
23. When a body moves in a circular path, its speed is —
A) Constant
B) Variable
C) Decreasing
D) Increasing
Answer: A)
Explanation:In uniform circular motion, speed remains constant but direction changes.
24. The motion of a pendulum is —
A) Linear motion
B) Oscillatory motion
C) Circular motion
D) Random motion
Answer: B)
Explanation:Pendulum swings back and forth about its mean position.
25. The slope of a distance–time graph gives —
A) Acceleration
B) Speed
C) Displacement
D) Force
Answer: B)
Explanation: Slope = change in distance/change in time.
26. A train moves from rest and attains a speed of 20 m/s in 10 seconds. Its acceleration is —
A) 1 m/s²
B) 2 m/s²
C) 3 m/s²
D) 4 m/s²
Answer: B)
Explanation: a=(v−u)/t=(20−0)/10=2 m/s2a = (v – u)/t = (20 – 0)/10 = 2 \, m/s²a=(v−u)/t=(20−0)/10=2m/s2
27. The area under an acceleration–time graph represents —
A) Speed
B) Distance
C) Velocity
D) Force
Answer: C)
Explanation: Area = acceleration × time = change in velocity.
28. If a body returns to its initial position, its displacement is —
A) Positive
B) Negative
C) Zero
D) Infinite
Answer: C)
Explanation:Displacement = shortest distance between start and end point → zero.
29. What type of quantity is acceleration?
A) Scalar
B) Vector
C) Constant
D) Variable
Answer: B)
Explanation:Acceleration has both magnitude and direction.
30. If the velocity of an object is constant, its acceleration is —
A) Positive
B) Negative
C) Zero
D) Uniform
Answer: C)
Explanation:No change in velocity → acceleration = 0.
31. The speedometer of a car measures —
A) Average speed
B) Instantaneous speed
C) Acceleration
D) Retardation
Answer: B)
Explanation: It shows speed at a given instant of time.
32. A freely falling body under gravity has —
A) Constant speed
B) Constant velocity
C) Constant acceleration
D) Constant momentum
Answer: C)
Explanation: Acceleration = g=9.8 m/s2g = 9.8 \, m/s²g=9.8m/s2 constant during free fall.
33. Which of the following represents non-uniform motion?
A) Earth revolving around Sun
B) A car moving with constant speed
C) A train moving with constant velocity
D) A fan rotating at constant speed
Answer: A)
Explanation: Speed may remain constant but direction changes → non-uniform velocity..
34. A car covers 100 m in 5 s. Its average speed is —
A) 10 m/s
B) 15 m/s
C) 20 m/s
D) 25 m/s
Answer: C)
Explanation: Speed = distance/time = 100/5 = 20 m/s.
35. A particle moving with uniform speed in a circle has —
A) Uniform velocity
B) Non-uniform velocity
C) Zero acceleration
D) Increasing velocity
Answer: B)
Explanation: Velocity direction changes continuously in circular motion.
36. Which of these is dimensionally equivalent to velocity?
A) Length × Time
B) Time/Length
C) Length/Time
D) Time × Time
Answer: C)
Explanation: Velocity = displacement/time → L/T.
37. What is the average speed if a car travels 60 km in 2 hours?
A) 25 km/h
B) 30 km/h
C) 40 km/h
D) 30 m/s
Answer: B)
Explanation: Speed = distance/time = 60/2 = 30 km/h.
38. When a body slows down, its acceleration is —
A) Positive
B) Zero
C) Negative
D) Constant
Answer: C)
Explanation: Negative acceleration = retardation..
39. The velocity of an object at rest is —
A) Zero
B) Positive
C) Negative
D) Constant
Answer: A)
Explanation: At rest means no displacement → zero velocity.
40. Which of the following equations of motion is dimensionally correct?
A) v=u+atv = u + atv=u+at
B) s=ut+½at2s = ut + ½at²s=ut+½at2
C) v2=u2+2asv² = u² + 2asv2=u2+2as
D) All of these
Answer: D)
Explanation:All three are derived from the laws of uniform acceleration and are dimensionally consistent.
41. If a car moves 30 km north and then 40 km east, the magnitude of displacement is —
A) 50 km
B) 70 km
C) 35 km
D) 60 km
Answer: A)
Explanation:By Pythagoras theorem, displacement = √(30² + 40²) = 50 km consistent.
42. A body moving in a circular path with constant speed has —
A) Constant velocity
B) Constant acceleration
C) Variable velocity
D) Zero acceleration
Answer: C)
Explanation:Direction of velocity changes continuously, hence velocity varies.
43. The time rate of change of displacement is —
A) Speed
B) Velocity
C) Acceleration
D) Momentum
Answer: B)
Explanation:v=dsdtv = \frac{ds}{dt}v=dtds.
44. A stone is dropped from a height of 20 m. How long will it take to reach the ground? (g = 10 m/s²)
A) 1 s
B) 2 s
C) 3 s
D) 4 s
Answer: B)
Explanation: s=½gt2⇒20=½×10×t2⇒t2=4⇒t=2ss = ½gt² \Rightarrow 20 = ½×10×t² \Rightarrow t² = 4 \Rightarrow t = 2 ss=½gt2⇒20=½×10×t2⇒t2=4⇒t=2s.
45. The speed of an object at a given instant is called —
A) Average speed
B) Instantaneous speed
C) Uniform speed
D) Constant speed
Answer: B)
Explanation: Speed at a specific moment is instantaneous speed.
46. Which of the following is an example of linear motion?
A) Pendulum swing
B) Car moving on a straight road
C) Fan rotation
D) Earth’s revolution
Answer: B)
Explanation: Motion along a straight line is linear motion.
47. The slope of a velocity–time graph for uniform acceleration is —
A) Zero
B) Constant
C) Increasing
D) Decreasing
Answer: B)
Explanation:Constant acceleration gives a straight line (constant slope).
48. The area under velocity–time graph for uniform motion is —
A) Speed
B) Acceleration
C) Displacement
D) Force
Answer: C)
Explanation:Area = velocity × time = displacement.
49. A car moving at 10 m/s accelerates uniformly at 2 m/s² for 5 seconds. Final velocity = ?
A) 15 m/s
B) 20 m/s
C) 25 m/s
D) 30 m/s
Answer: B)
Explanation:The final velocity vv of a car moving at 10 m/s and accelerating uniformly at 2 m/s² for 5 seconds is given by the formula:v=u+atv=u+at.
50. If acceleration is zero, which of the following is true?
A) Velocity changes
B) Speed decreases
C) Velocity is constant
D) Force is large
Answer: C)
Explanation: No acceleration means no change in velocity.
51. When a car is moving with constant velocity, its acceleration is —
A) Positive
B) Negative
C) Zero
D) Infinite
Answer: C)
Explanation: No change in velocity → acceleration = 0.
52. The motion of hands of a clock is —
A) Uniform linear
B) Circular
C) Periodic
D) Both B and C
Answer: D)
Explanation:The hands move in circular path and repeat motion periodically.
53. A cyclist goes round a circular track of radius 140 m in 60 seconds. His speed is —
A) 12.56 m/s
B) 10 m/s
C) 14.66 m/s
D) 9.33 m/s
Answer: C)
Explanation:Speed = total distance ÷ time.
Distance around a circular track = circumference = 2πr.
Substituting values gives the speed ≈ 14.66 m/s.
54. A body travels 10 m in first 2 s, 20 m in next 2 s, and 30 m in next 2 s. The motion is —
A) Uniform
B) Uniformly accelerated
C) Retarded
D) Static
Answer: B)
Explanation:Equal increase in distance in equal time intervals.
55. A ball thrown vertically upward has zero velocity at —
A) Ground
B) Maximum height
C) Mid-point
D) Everywhere
Answer: B)
Explanation:At topmost point, instantaneous velocity = 0.
56. A car slows down from 20 m/s to rest in 4 s. The retardation is —
A) 4 m/s²
B) 5 m/s²
C) 6 m/s²
D) 8 m/s²
Answer: B)
Explanation: a=(v−u)/t=(0−20)/4=−5m/s2a = (v – u)/t = (0 – 20)/4 = -5 m/s²a=(v−u)/t=(0−20)/4=−5m/s2.
57. A stone is thrown vertically upward. Its acceleration during upward motion is —
A) Zero
B) Positive
C) Negative
D) Variable
Answer: C)
Explanation:Acceleration due to gravity acts downward, opposite to motion.
58. Which one is a scalar quantity?
A) Velocity
B) Acceleration
C) Distance
D) Displacement
Answer: C)
Explanation: Distance has magnitude only, no direction.
59. The motion of a sewing machine needle is —
A) Circular
B) Oscillatory
C) Linear
D) Random
Answer: B)
Explanation: It moves up and down about a mean position.
60. A body covering equal distances in equal time intervals moves with —
A) Uniform velocity
B) Uniform acceleration
C) Non-uniform motion
D) Retardation
Answer: A)
Explanation: Equal distances in equal times → velocity constant.
61. The path followed by a projectile is —
A) Straight line
B) Circle
C) Parabola
D) Ellipse
Answer: C)
Explanation: A projectile under gravity follows a parabolic trajectory.
62. A body moving with constant speed but changing direction is said to have —
A) Uniform motion
B) Accelerated motion
C) Retardation
D) No motion
Answer: B)
Explanation: Direction change causes change in velocity → acceleration.
63. Which of the following can be represented by a straight line passing through the origin on a velocity–time graph?
A) Uniform acceleration
B) Non-uniform acceleration
C) Retardation
D) Rest
Answer: A)
Explanation: Straight line through origin shows acceleration is constant.
64. A vehicle moving in a straight line increases its speed from 10 m/s to 30 m/s in 5 seconds. The acceleration is —
A) 3 m/s²
B) 4 m/s²
C) 5 m/s²
D) 6 m/s²
Answer: B)
Explanation: The vehicle’s speed increases uniformly over the given time, so the acceleration is constant and equals 4 m/s24m/s2.
65. If a car travels 100 km in 2 hours and returns back in 3 hours, average speed = ?
A) 20 km/h
B) 30 km/h
C) 40 km/h
D) 25 km/h
Answer: C)
Explanation: The total distance covered is 100 km going and 100 km returning, so 200 km in total.
The total time taken is 2 hours to go and 3 hours to return, so 5 hours in total.
Average speed is the total distance divided by the total time, giving 40 km/h.
66. In uniform circular motion, the direction of acceleration is —
A) Tangential
B) Outward
C) Towards center
D) Along velocity
Answer: C)
Explanation: Centripetal acceleration acts towards the center of the circle.
67. Which of the following statements is true?
A) Velocity and speed are always equal
B) Velocity and speed may differ
C) Velocity is always greater than speed
D) Velocity has no direction
Answer: B)
Explanation: They differ when direction changes.
68. The average velocity of a moving object can be zero when —
A) Object is at rest
B) Total displacement is zero
C) Total distance is zero
D) Velocity is constant
Answer: B)
Explanation: Displacement = 0 → average velocity = 0 (e.g., round trip).
69. Displacement–time graph parallel to the time axis represents —
A) Stationary object
B) Uniform motion
C) Accelerated motion
D) Decelerated motion
Answer: A)
Explanation: No change in displacement → body at rest.
70. The SI unit of displacement is —
A) Kilometer
B) Meter
C) Centimeter
D) Foot
Answer: B)
Explanation: Standard SI unit of displacement is meter (m).
71. The speed of a car changes from 10 m/s to 15 m/s in 10 seconds. Its acceleration is —
A) 0.25 m/s²
B) 0.4 m/s²
C) 0.5 m/s²
D) 0.75 m/s²
Answer: C)
Explanation: a=(v−u)/t=(15−10)/10=0.5m/s2a = (v – u)/t = (15 – 10)/10 = 0.5 m/s²a=(v−u)/t=(15−10)/10=0.5m/s2
72. The motion of the second hand of a clock is —
A) Periodic
B) Oscillatory
C) Rectilinear
D) Vibratory
Answer: A)
Explanation: It repeats motion after every 60 seconds.
73. What is the displacement of a car that moves 4 km east and then 3 km north?
A) 7 km
B) 5 km
C) 6 km
D) 4 km
Answer: B)
Explanation: s=√(42+32)=5kms = √(4² + 3²) = 5 kms=√(42+32)=5km
74. For a body moving with uniform velocity, which quantity is zero?
A) Acceleration
B) Displacement
C) Distance
D) Speed
Answer: A)
Explanation: Constant velocity → no acceleration.
75. A body thrown upward returns to the same point. Its displacement is —
A) Maximum
B) Zero
C) Minimum
D) Infinite
Answer: B)
Explanation:Final and initial positions are same → displacement = 0.
76. If the velocity–time graph is a straight line parallel to the time axis, it means —
A) Acceleration is constant
B) Acceleration is zero
C) Velocity is increasing
D) Velocity is decreasing
Answer: B)
Explanation:Constant velocity → no change → acceleration = 0.
77. The acceleration of a body at rest is —
A) Infinite
B) Zero
C) Positive
D) Negative
Answer: B)
Explanation:No change in velocity → acceleration = 0.
78. What kind of motion does the needle of a gramophone record exhibit?
A) Oscillatory
B) Random
C) Circular
D) Rotatory
Answer: A)
Explanation:The needle of a gramophone moves back and forth as it traces the grooves on the spinning record.
79. The term “retardation” means —
A) Increase in velocity
B) Decrease in velocity
C) Constant velocity
D) Zero velocity
Answer: B)
Explanation: Negative acceleration is called retardation.
80. A body moving with constant speed in a circular path has —
A) Zero acceleration
B) Changing acceleration
C) Constant acceleration
D) Variable acceleration
Answer: C)
Explanation: Centripetal acceleration acts towards center, with constant magnitude.
81. The acceleration of a freely falling body near Earth’s surface is —
A) Zero
B) 8.9 m/s²
C) 9.8 m/s²
D) 10.8 m/s²
Answer: C)
Explanation:Acceleration due to gravity (g) on Earth = 9.8 m/s².
82. The velocity of a freely falling body after 3 seconds is —
A) 19.6 m/s
B) 29.4 m/s
C) 9.8 m/s
D) 39.2 m/s
Answer: B)
Explanation:v=gt=9.8×3=29.4 m/sv = gt = 9.8 × 3 = 29.4 \, m/sv=gt=9.8×3=29.4m/s
83. A car moving with a constant velocity has _____.
A) Zero acceleration
B) Increasing acceleration
C) Decreasing acceleration
D) None of these
Answer: A)
Explanation: A car moving with a constant velocity has zero acceleration because acceleration is the rate of change of velocity, and if the velocity is constant, it is not changing.
84.In a Velocity-time graph,a negative slope indicates:
A)Increasing velocity
B)Decreasing acceleration
C)Negative acceleration
D)Constant velocity
Answer: C)
Explanation:the object is decelerating, or slowing down, if its velocity is positive, or it is speeding up in the negative direction if its velocity is negative.
85. The quantity having both magnitude and direction is called —
A) Scalar
B) Vector
C) Speed
D) Energy
Answer: B)
Explanation:A quantity that has both magnitude and direction is called a vector quantity. Examples include displacement, velocity, and force.
86. Which of the following describes an object in uniform motion?
a) The object is accelerating.
b) The object is at rest.
c) The object is changing its direction.
d) The object covers equal distances in equal intervals of time.
Answer: d)
Explanation:one that covers equal distances in equal intervals of time essentially, it moves at a constant speed in a straight line, meaning its velocity remains constant.
87. A car is said to be in uniform motion when —
A) It moves equal distances in equal intervals of time
B) It moves unequal distances in equal time
C) Its speed varies
D) It stops and moves again
Answer: A)
Explanation:Uniform motion is defined as the movement of an object in which it travels equal distances in equal intervals of time, regardless of how small the time intervals are..
88. The motion of a child on a swing is —
A) Circular
B) Oscillatory
C) Linear
D) Random
Answer: B)
Explanation: The child moves back and forth continuously around a fixed central point, which is characteristic of oscillatory motion.
89. The slope of a displacement–time graph gives —
A) Velocity
B) Acceleration
C) Distance
D) Momentum
Answer: A)
Explanation:The slope of a displacement-time graph gives the velocity of an object.
90. Which of the following represents zero acceleration?
A) Free fall
B) Uniform circular motion
C) Uniform linear motion
D) Motion on an incline
Answer: C)
Explanation: Zero acceleration means the velocity of an object is not changing with time
91. The distance–time graph for an object moving with non-uniform speed is —
A) Straight line
B) Curved line
C) Horizontal line
D) Vertical line
Answer: B)
Explanation: the object covers unequal distances in equal intervals of time, meaning its speed is constantly changing.
92. The motion of an electric fan after being switched off is an example of —
A) Uniform motion
B) Retardation
C) Constant acceleration
D) Uniform speed
Answer: B)
Explanation: When a fan is switched off, the motor stops providing force, and friction and air resistance act to slow the blades down until they come to a complete stop. This slowing down is deceleration or retardation.
93. The velocity of a body is zero at its highest point when —
A) It is dropped
B) It is thrown vertically upward
C) It moves in a circle
D) It falls freely
Answer: B) It is thrown vertically upward
Explanation: At topmost point, momentary velocity = 0.
Answer: B)
Explanation: the object covers unequal distances in equal intervals of time, meaning its speed is constantly changing.
94. In which case will the distance and displacement be equal?
A) Circular motion
B) Motion in a straight line without changing direction
C) Random motion
D) Oscillatory motion
Answer: B)
Explanation: If an object travels from point A to point B without ever turning back, the distance covered and the displacement will be the same.
95. Passengers are pushed back when a bus starts abruptly. Which of the following is an example of this?
A) Newton’s First Law
B) Newton’s Second Law
C) Newton’s Third Law
D) None of Newton’s laws
Answer: A)
Explanation: When a bus starts suddenly, passengers are pushed back due to Newton’s first law of motion, also known as the law of inertia.
96. The direction of motion of an object at any instant is along its —
A) Acceleration
B) Velocity
C) Displacement
D) Speed
Answer: B)
Explanation:Velocity is a vector quantity that has both magnitude (speed) and direction. The direction of velocity always corresponds to the direction in which the object is moving at that instant.
97. The term “uniform acceleration” means —
A) Acceleration is increasing
B) Acceleration is constant
C) Speed is constant
D) Acceleration is zero
Answer: B)
Explanation:an object’s velocity changes by equal amounts in equal time intervals, so the acceleration itself is constant.
98. The total path length covered by an object is called —
A) Displacement
B) Distance
C) Velocity
D) Speed
Answer: B)
Explanation:Distance is a scalar quantity that represents the complete length of the actual path traveled by an object, irrespective of direction
99. The average speed of a moving body can never be —
A) Zero
B) Less than average velocity
C) Greater than average velocity
D) Equal to average velocity
Answer: B)
Explanation:The average speed of a moving body can never be zero. This is because average speed is calculated by dividing the total distance traveled by the total time taken, and a moving object
100. The unit of acceleration is —
A) m/s
B) m/s²
C) m²/s
D) m/s³
Answer: B)
Explanation:The SI unit for acceleration is meters per second squared (
m/s2m / s squared𝑚/𝑠2).