Sure, here are 30 multiple choice questions (MCQs) on motion for class 9,
excluding topics related to force, laws of motion, sound, and gravitation:
1. Which of the following is an example of uniform motion?
a) A car accelerating from rest b) A bicycle slowing down c) A train
moving with constant speed d) A ball bouncing up and down
2. Which of the following is a scalar quantity? a) Velocity b) Speed c)
Displacement d) Acceleration
3. What is the SI unit of speed? a) Meter per second (m/s) b) Meter per
second squared (m/s^2) c) Kilometer per hour (km/h) d) Kilometer per
second (km/s)
4. If an object moves along a straight line and its velocity keeps changing,
the motion is said to be: a) Uniform b) Non-uniform c) Accelerated d)
Decelerated
5. The area under the velocity-time graph represents: a) Acceleration b)
Distance traveled c) Displacement d) Speed
6. Which of the following equations represents the relationship between
distance, speed, and time? a) \( s = vt \) b) \( v = s/t \)
c) \( t = s/v \) d) \( v = s \times t \)
7. An object is moving with a constant speed of 10 m/s. What is its
acceleration? a) 0 m/s^2 b) 5 m/s^2 c) 10 m/s^2 d) It cannot be
determined without more information
8. If the speed of an object is decreasing, its acceleration is:
a) Positive
b) Negative
c) Zero
d) Constant
9. Which of the following is an example of non-uniform motion?
a) A car moving at a constant speed
b) A ball falling freely under gravity
c) A bicycle accelerating from rest
d) A train moving with constant velocity
10. When an object moves in a circular path at a constant speed, its
acceleration is directed:
a) Towards the center of the circle
b) Tangentially to the circle
c) Away from the center of the circle
d) It depends on the radius of the circle
11. Which of the following is NOT true about acceleration?
a) It can be positive or negative
b) It is the rate of change of velocity
c) It is a vector quantity
d) It is always measured in meters
12. If the velocity-time graph of an object is a horizontal line, the object's
acceleration is:
a) Positive
b) Negative
c) Zero
d) Cannot be determined without more information
13. What does a negative slope on a distance-time graph represent?
a) Acceleration
b) Deceleration
c) Constant speed
d) Zero velocity
14. A car travels 100 km in 2 hours and then another 100 km in 3 hours.
What is its average speed?
a) 40 km/h
b) 50 km/h
c) 60 km/h
d) 70 km/h
15. What is the acceleration of an object if it starts from rest and reaches a
speed of 10 m/s in 5 seconds?
a) 0.5 m/s^2
b) 1 m/s^2
c) 2 m/s^2
d) 5 m/s^2
16. A body is thrown vertically upwards. What is its acceleration at the
highest point of its motion?
a) 9.8 m/s^2
b) 0 m/s^2
c) -9.8 m/s^2
d) 19.6 m/s^2
17. An object is dropped from a certain height. Neglecting air resistance,
what will be its acceleration during free fall?
a) 9.8 m/s^2 upwards
b) 9.8 m/s^2 downwards
c) 19.6 m/s^2 upwards
d) 19.6 m/s^2 downwards
18. If the velocity-time graph of an object is a straight line sloping
downwards, the object is:
a) Accelerating
b) Decelerating
c) Moving at constant velocity
d) At rest
19. Which of the following is true about velocity?
a) It is a vector quantity
b) It can never be negative
c) It is the same as speed
d) It has no direction
20. What is the unit of acceleration?
a) Meter per second (m/s)
b) Meter per second squared (m/s^2)
c) Meter (m)
d) Second (s)
21. If a car takes a 90-degree turn at a constant speed, its velocity is:
a) Constant
b) Changing
c) Zero
d) Negative
22. Which of the following is NOT a type of motion?
a) Circular motion
b) Linear motion
c) Random motion
d) Harmonic motion
23. What is the displacement of an object that moves 5 meters east and then
3 meters west?
a) 8 meters east
b) 2 meters east
c) 8 meters west
d) 2 meters west
24. If an object moves with constant speed along a circular path, its
acceleration is directed:
a) Radially outward
b) Radially inward
c) Tangentially to the circle
d) Perpendicular to the circle
25. A car travels 200 km at 50 km/h and then 200 km at 100 km/h. What is
its average speed for the entire journey?
a) 60 km/h
b) 70 km/h
c) 75 km/h
d) 80 km/h
26. What does the slope of a velocity-time graph represent?
a) Acceleration
b) Speed
c) Distance
d) Displacement
27. Which of the following is a vector quantity?
a) Speed
b) Distance
c) Displacement
d) Distance traveled
28. If a car is moving at a constant speed, what can you say about its
acceleration?
a) It is zero
b) It is positive
c) It is negative
d) It is changing
29. Which of the following statements is true about instantaneous speed?
a) It is always equal to average speed
b) It is the speed at a particular instant of time
c) It is calculated by dividing total distance by total time
d) It is a scalar quantity
30. Which of the following is an example of circular motion?
a) A car moving along a straight road
Sure, here are 40 more multiple choice questions (MCQs) on motion for class
9:
31. What is the SI unit of acceleration?
a) Meter per second (m/s)
b) Meter per second squared (m/s^2)
c) Kilometer per hour (km/h)
d) Kilometer per second (km/s)
32. Which of the following equations represents the relationship between
speed, time, and acceleration?
a) \( v = at \)
b) \( a = vt \)
c) \( t = v/a \)
d) \( a = v/t \)
33. Which of the following is a scalar quantity?
a) Velocity
b) Speed
c) Displacement
d) Acceleration
34. A car accelerates uniformly from rest to a speed of 20 m/s in 10 seconds.
What is its acceleration?
a) 2 m/s^2
b) 4 m/s^2
c) 6 m/s^2
d) 8 m/s^2
35. If the velocity-time graph of an object is a straight line parallel to the
time axis, the object is:
a) Accelerating
b) Decelerating
c) Moving at constant speed
d) At rest
36. Which of the following is a correct statement about velocity?
a) It is always positive
b) It is a scalar quantity
c) It is the rate of change of displacement
d) It is independent of direction
37. If a car travels 200 km in 4 hours and then another 300 km in 5 hours,
what is its average speed for the entire journey?
a) 50 km/h
b) 55 km/h
c) 60 km/h
d) 65 km/h
38. An object is moving in a circular path with constant speed. What is its
acceleration?
a) Zero
b) Non-zero and constant
c) Increasing
d) Decreasing
39. A body is thrown vertically upwards. What is its acceleration at the
highest point of its motion?
a) 9.8 m/s^2
b) 0 m/s^2
c) -9.8 m/s^2
d) 19.6 m/s^2
40. An object is moving with a constant speed. Which of the following
statements is true?
a) Its acceleration is zero
b) Its velocity is zero
c) Its displacement is zero
d) Its distance traveled is zero
41. Which of the following quantities can be negative?
a) Distance
b) Speed
c) Displacement
d) Acceleration
42. What is the displacement of an object that moves 10 meters north, then
5 meters south, and finally 3 meters east?
a) 8 meters north
b) 2 meters north
c) 2 meters south
d) 8 meters east
43. Which of the following is an example of circular motion?
a) A car moving along a straight road
b) A stone thrown vertically upwards
c) Earth revolving around the sun
d) A ball rolling down a slope
44. What is the SI unit of velocity?
a) Meter per second (m/s)
b) Meter per second squared (m/s^2)
c) Kilometer per hour (km/h)
d) Kilometer per second (km/s)
45. An object moves along a straight line with a constant acceleration. Which
of the following statements is true?
a) Its velocity keeps increasing
b) Its velocity keeps decreasing
c) Its velocity changes direction
d) Its velocity remains constant
46. Which of the following quantities is a vector?
a) Speed
b) Distance
c) Displacement
d) Time
47. If an object is moving with a uniform velocity, its acceleration is:
a) Positive
b) Negative
c) Zero
d) Changing
48. What is the SI unit of distance?
a) Meter per second (m/s)
b) Meter (m)
c) Second (s)
d) Meter per second squared (m/s^2)
49. What does the area under a velocity-time graph represent?
a) Speed
b) Acceleration
c) Displacement
d) Distance traveled
50. Which of the following quantities is a scalar?
a) Velocity
b) Acceleration
c) Displacement
d) Force
51. An object is moving with a constant speed. Which of the following
statements is true?
a) Its velocity is changing
b) Its acceleration is zero
c) Its displacement is increasing
d) Its velocity is decreasing
52. Which of the following equations represents uniformly accelerated
motion?
a) \( s = vt \)
b) \( v = s/t \)
c) \( v = u + at \)
d) \( s = ut + \frac{1}{2}at^2 \)
53. What is the average speed of a car that travels 200 km in 4 hours and
then another 300 km in 6 hours?
a) 50 km/h
b) 55 km/h
c) 60 km/h
d) 65 km/h
54. Which of the following is an example of non-uniform motion?
a) A car moving at a constant speed
b) A ball falling freely under gravity
c) A bicycle accelerating from rest
d) A train moving with constant velocity
55. An object is dropped from a certain height. Neglecting air resistance,
what will be its acceleration during free fall?
a) 9.8 m/s^2 upwards
b) 9.8 m/s^2 downwards
c) 19.6 m/s^2 upwards
d) 19.6 m/s^2 downwards
56. What is the acceleration of an object if its velocity changes from 5 m/s to
15 m/s in 3 seconds?
a) 10 m/s^2
b) 5 m/s^2
c) 3 m/s^2
d) 15 m/s^2
57. A car accelerates uniformly from rest to a speed of 25 m/s in 5 seconds.
What is its acceleration?
a) 5 m/s^2
b) 10 m/s^2
c) 15 m/s^2
d) 20 m/s^2
58. Which of the following is a correct statement about acceleration?
a) It is always positive
b) It is a scalar quantity
c) It is the rate of change of velocity
d) It is independent of direction
59. What is the displacement of an object that moves 10 meters east, then 5
meters north, and finally 3 meters west?
a) 8 meters east
Sure, here are the assertion-reason statements without options:
1. Assertion: A car moving along a straight road with constant speed is an
example of uniform motion.
Reason: In uniform motion, the velocity remains constant both in
magnitude and direction.
2. Assertion: Acceleration is the rate of change of velocity.
Reason: Acceleration can be positive, negative, or zero depending on
whether the velocity is increasing, decreasing, or constant.
3. Assertion: Displacement is a vector quantity.
Reason: Displacement involves both magnitude and direction.
4. Assertion: Acceleration due to gravity near the Earth’s surface is
approximately \(9.8 \, \text{m/s}^2\).
Reason: Acceleration due to gravity is the rate at which the velocity of an
object changes under the influence of gravity.
5. Assertion: When an object moves in a circular path at a constant
speed, it experiences centripetal acceleration.
Reason: Centripetal acceleration is directed towards the center of the
circular path and is necessary to keep the object in its circular motion.
6. Assertion: If the velocity-time graph of an object is a horizontal line,
the object is not accelerating.
Reason: A horizontal line on a velocity-time graph indicates constant
velocity, which means zero acceleration.
7. Assertion: In uniform circular motion, the speed of the object remains
constant.
Reason: Although the speed remains constant, the velocity changes due to
the changing direction of motion.
8. Assertion: The area under a velocity-time graph represents the
displacement of an object.
Reason: Velocity-time graphs show how the velocity of an object changes
with time, and the area under the graph corresponds to the distance
traveled.
9. Assertion: The acceleration of an object is zero when its velocity
remains constant.
Reason: Acceleration is the rate of change of velocity, and if velocity is
constant, there is no change in velocity, hence no acceleration.
10. Assertion: The distance traveled by an object can never be
negative.
Reason: Distance is a scalar quantity that only considers the magnitude of
the displacement.
Certainly, here are 20 fill-in-the-blank questions related to motion:
1. _______ is the distance covered by an object in a given direction.
2. The rate of change of displacement is called _______.
3. If an object moves with a constant _______ along a straight line, its motion
is said to be uniform.
4. The area under a _______ graph represents the displacement of an object.
5. _______ is the rate of change of velocity.
6. An object in free fall experiences an acceleration due to gravity of
approximately _______ m/s² near the Earth's surface.
7. If an object moves along a straight line with a constant acceleration, its
velocity-time graph will be a _______ line.
8. _______ is the motion of an object around a fixed point or axis.
9. The velocity of an object moving in a circular path changes _______ to the
direction of motion.
10. If an object is moving in a circular path at a constant speed, it
experiences a _______ acceleration directed towards the center of the circle.
11. _______ is a scalar quantity that represents how fast an object is moving.
12. The slope of a distance-time graph represents the _______ of an object.
13. In uniform motion, the velocity-time graph of an object is a _______ line.
14. The SI unit of acceleration is _______ per second squared (m/s²).
15. If the velocity-time graph of an object is a horizontal line, the object's
acceleration is _______.
16. _______ is the distance between the initial and final positions of an object.
17. The _______ of an object is its change in velocity per unit time.
18. _______ motion refers to the motion of an object along a curved path.
19. When an object moves in a circular path, its acceleration is directed
_______ the center of the circle.
20. The speed of an object is the _______ of its distance covered to the time
taken.
