Free Online Class 9 Science MCQ Questions of Motion with Answers here. The MCQ Questions for class 9 science with answers have been set up according to the schedule, books, and exam pattern. Students can solve Class 9 Motion Multiple Choice Questions with Answers to understand their preparation level.
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MCQ Questions for class 9 with answers were helpful to understand the recent exam patterns. We’ve Provided Motion MCQs Questions with Answers to assist students understands the concept alright.
Check the below MCQ Questions for class 9 Science with Answers.
Practice MCQ Questions for class 9 Chapter-Wise
1. Who gave the equations of motion for the first time?
(a) Bernhard Nobel
(b) Issac Newton
(c) C. V. Raman
(d) Einstein
2. The displacement of the object in a unit time is called:
(a) speed
(b) velocity
(c) acceleration
(d) average speed
3. The rate of change of velocity per second is known as:
(a) acceleration
(b) speed
(c) average velocity
(d) linear motion
4. Which is the most simple type of motion among the following?
(a) Motion in straight line
(b) Motion in plane.
(c) Motion in space
(d) Motion of projectile.
5. A particle is moving in a circular path of radius r. The displacement after half a circle would be:
(a) Zero
(b) π r
(c) 2 r
(d) 2π r
6. A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is,
(a) u/g
(b) u2/2g
(c) u2/g
(d) u/2g
7. The numerical ratio of displacement to distance for a moving object is
(a) always less than 1
(b) always equal to 1
(c) always more than 1
(d) equal or less than 1
8. If the displacement of an object is proportional to square of time, then the object moves with
(a) uniform velocity
(b) uniform acceleration
(c) increasing acceleration
(d) decreasing acceleration
9. From the given v – t graph Fig., it can be inferred that the object is
(a) in uniform motion
(b) at rest
(c) in non-uniform motion
(d) moving with uniform acceleration
10. If an object moves 4 km in a straight line then the value of displacement is….
(a) 4 km
(b) 8 km
(c) 12 km
(d) 0 km
11. Speed is depend on…
(a) Path length
(b) Displacement
(c) Initial and final position of the object.
(d) None of these.
12. Velocity of the particle is depend on….
(a) Distance
(b) Displacement
(c) Path of the object
(d) None of these.
13. If the particle completes one rotation along a circular track having radius 14 m in 44 seconds then the value of speed it’s speed is…
(a) 1 m/s.
(b) 2 m/s.
(c) 3 m/s.
(d) 4 m/s
14. The area of speed time graph is…
(a) Distance
(b) Acceleration
(c) Velocity
(d) Speed
15. Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed of 10 m/s. It implies that the boy is
(a) at rest
(b) moving with no acceleration
(c) in accelerated motion
(d) moving with uniform velocity
16. Area under a v – t graph represents a physical quantity which has the unit
(a) m2
(b) m
(c) m3
(d) m s–1
17. Four cars A, B, C and D are moving on a levelled road. Their distance versus time graphs are shown in Fig. 8.2. Choose the correct statement
(a) Car A is faster than car D.
(b) Car B is the slowest.
(c) Car D is faster than car C.
(d) Car C is the slowest.
18. In which of the following cases of motions, the distance moved and the magnitude of displacement are equal?
(a) If the car is moving on straight road
(b) If the car is moving in circular path
(c) The pendulum is moving to and fro
(d) The earth is revolving around the Sun
19. You can derive first equation of kinematics is from the formula of….
(a) Distance
(b) Speed
(c) Acceleration
(d) Velocity
20. Which of the following is the example of uniform motion.
(a) Zig-zag motion of butterfly
(b) Motion of aero plane before take off
(c) Motion of periods of soldiers.
(d) Motion of fan after switch off.
Answer:
1. Answer: (b) Issac Newton
2. Answer: (b) velocity
3. Answer: (a) acceleration
4. Answer: (a) motion in straight line is most simple type of motion.
5. Answer: (c) 2 r
Explanation: After half revolution
Distance travelled = X circumference= πr
Path length
Displacement = Final position- Initial Position
It comes out to be the diameter of the circle = 2R.
6. Answer: (b) u2/2g
Explanation: V2= u2+2 as
here v = 0
a = -g
s = H
0 = u2 -2gH
H = u2/2g
7. Answer: (d) equal or less than 1
Explanation: The shortest distance between the initial and the endpoint is called displacement. Distance is the total path length.
Displacement is vector and it may be positive or negative whereas Distance is scalar and it can never be negative.
The distance can be equal or greater than displacement which means the ratio of displacement to distance is always equal to or less than 1.
8. Answer: (b) uniform acceleration
Explanation: Velocity is measured in distance /second and acceleration is measured in Distance/ second2. Hence Uniform acceleration is the right answer.
9. Answer: (a) in uniform motion
Explanation: From the above-given graph, it is clear that velocity of the object remains constant throughout hence the object is in uniform motion.
10. Answer: (d) 0 km
Explanation: If the initial and final position of the particle is zero then the value of displacement becomes zero.
11. Answer: (a) Path length
Explanation: As we know that speed is the ratio of path length and time.
12. Answer: (b) Displacement
Explanation: As we know that velocity is the ratio of displacement and time.
13. Answer: (b) 2 m/s.
Explanation: Given, radius of circular track = 14 m,
Time = 44 seconds.
As we know that, the distance covered by particle along circular track is the circumference of that circle.
Distance = Circumference = 2 × π × r
Distance = Circumference = 2 ×( 22/7 )× 14
Distance = 2 × 22 ×2
Distance = 88 m.
As,
Speed = distance /time.
Speed = 88 / 44
Speed = 2 m/s.
14. Answer: (d) speed.
15. Answer: (c) in accelerated motion
Explanation: Boy is moving in a circular motion and circular motion is an accelerated motion.
16. Answer: (b) m
Explanation: The area given in the graph represents Displacement and its unit is meter.
17. Answer: (b) Car B is the slowest.
Explanation: Graph shows that Car B covers less distance in a given time than A, C and D cars hence it is the slowest.
18. Answer: (a) If the car is moving on a straight road
Explanation: In other cases given here displace can be less than distance hence option (a) If the car is moving on a straight road is the right answer.
19. Answer: (c) Acceleration
Explanation: we can derive 1st equation of kinematics from the formula of acceleration.
20. Answer: (c) motion of soldiers.