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| Physics 9th Chapter 2 Kinematics Questions Bank |
Physics 9th Chapter 2 Kinematics Questions Bank MCQs
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1. When a body is falling freely under the gravity then in equations of motion ‘a’ is replaced by:
2. 1ms⁻¹=
3. 50 kmh⁻¹ =
4. 54 kmh⁻¹ into ms⁻¹
5. 72 kmh⁻¹ =
6. Area under the speed time graph shows:
7. By dividing displacement of a moving body with time, we obtain:
8. By which quantity should we divide acceleration in kmh⁻² to get its value in ms⁻²?
9. Causes day and night on the Earth:
10. Equations of motion are:
11. If a body changes its position with respect to some observer then it will be in state of:
12. If a body covers equal distance in equal intervals of time, however small the intervals may be, then the speed of the body is known as:
13. If a body does not change its position with respect to some observer then it will be in a state of
14. If a body is falling under the gravity then its gravitational acceleration will be:
15. If a body is falling under the gravity then its initial velocity will be:
16. If a body is thrown upward, then its gravitational acceleration will be:
17. If a body is thrown vertically upward then its final velocity will be:
18. If a car is moving with uniform speed in a circle then its velocity will be:
19. If the direction of motion of body and acceleration are in opposite direction then acceleration will be:
20. If the direction of motion of body and acceleration are in same direction then acceleration will be:
21. If the speed and direction of the moving body does not change with time then its velocity is said to be:
22. If the speed or direction of the moving body changes with time then its velocity is said to be:
23. If the velocity of a body is uniform then its acceleration will be:
24. If the velocity of the body is decreasing then its acceleration will be:
25. If the velocity of the body is increasing then its acceleration will be:
26. If velocity of a body changes equally in equal intervals of time then its acceleration will be:
27. In distance time graph time is taken along:
28. In equations of motion, Acceleration will always be:
29. In equations of motion, motion will always be taken along ______ line:
30. In equations of motion, quantities in the direction of initial velocity are taken as:
31. In equations of motion, quantities opposite to the direction of initial velocity are taken as:
32. In speed time graph, sketched for deriving equations of motion “at” is:
33. Rate of change of velocity is known as:
34. Rest and motion are states:
35. Series of experiments on free fall of heavy bodies was performed by:
36. SI unit of acceleration is:
37. SI unit of speed is:
38. Speed is a:
39. Speed of cheetah
40. Speed of falcon is:
41. Study of motion of the bodies is known as
42. Study of motion without discussing the cause of motion is called:
43. The area uner a speed time graph respresents
44. The direction of motion of body and acceleration is in opposite direction then acceleration will be:
45. The direction of motion of body and acceleration is in same direction then acceleration will be:
46. The distance covered by it in the first second is:
47. The motion of rider in a Ferris wheel is:
48. The motion of the string of a violin is
49. The quantity which are described by magnitude as well as direction is called:
50. The quantity which can be described by a number, with suitable unit only is called:
51. The rate of displacement with respect to time is known as:
52. The shortest distance between two points is known as:
53. The slope of straight line in distance time graph gives the magnitude of:
54. The slope of straight line in speed time graph gives the magnitude of:
55. The spinning motion of a body about its axis is known as
56. The spinning motion of individual particles of top is known as
57. The velocity and acceleration of a body moving with uniform speed in a circular path will be:
58. There are ____ equations of motion which are used to solve the problems about the motion of bodies:
59. To get speed in ms⁻¹, we multiply speed in kmh⁻¹ by:
60. Total length of a path between two points is known as:
61. Value of g depends on:
62. Velocity of a paratrooper coming down with constant velocity is also called:
63. When a body is falling freely under the gravity then in equations of motion 'a' is replaced by:
64. When a body moves to and fro about a point and repeats its motion again and again about the same point then this motion is known as:
65. Which of the following is a vector quantity?
Short Questions
1. A body is moving with uniform speed. Will its velocity be uniform?
2. Can a body moving at a constant speed have acceleration?
3. Can a body moving with certain velocity in the direction of east can have acceleration in the direction of west?
4. Can a body moving with constant velocity have acceleration?
5. Can you point out some differences in circular and rotatory motion?
6. Define acceleration?
7. Define average speed?
8. Define average velocity?
9. Define Axis of rotation
10. Define kinematics?
11. Define Magnitude.
12. Define mechanics? Write its branches
13. Define Origin?
14. Define the surroundings?
15. Define the term position?
16. Define the variable velocity?
17. Define uniform acceleration?
18. Define uniform speed.
19. Define uniform velocity?
20. Define variable acceleration.
21. Define variable speed.
22. Define variable velocity.
23. Derive the first equation of motion for uniformly accelerated rectilinear motion.
24. Describe rotatory motion with the help of examples?
25. Describe the purpose of different equations of motion?
26. Describe translatory motion with the help of examples?
27. Describe vibratory motion with the help of examples?
28. Difference between rest and motion?
29. Differentiate between Circular motion and rotatory motion
30. Differentiate between Distance and displacement
31. Differentiate between Linear and random motion
32. Differentiate between positive and negative acceleration?
33. Differentiate between Rest and motion
34. Differentiate between Scalers and Vectors
35. Differentiate between Speed and velocity
36. Differentiate Distance and displacement?
37. Differentiate scalar and vector quantities.
38. Differentiate Speed and Velocity?
39. Does speedometer of a car measure its velocity?
40. Drop an object from some height and observe its motion. Does its velocity increase, decrease or remain constant as it approaches the ground?
41. Explain the difference between distance and displacement?
42. Explain the motion of freely falling bodies?
43. Explain translatory motion and give examples of various types of translator motion.
44. Give an example of a body that is at rest and is in motion at the same time.
45. How a vector is represented?
46. How are vector quantities important to us in our daily life?
47. How can vectors quantities can be represented graphically?
48. How can we find distance from speed time graph?
49. How can we use equations of motion for bodies, which are falling freely under the gravity?
50. How do riders in a Ferris wheel possess Translatory motion but not circular motion?
51. How you will define the uniform speed?
52. Justify the need of direction for a vector quantity.
53. List the types of motion?
54. Mention the type of motion in each of the following.
55. Plot and interpret a distance-time graph for a body moving with constant speed?
56. Sketch a distance-time graph from the body starting from rest. How will you determine the speed of the body from this graph?
57. Sketch a speed-time graph for a body moving with constant speed?
58. What are equations of motion?
59. What are the points kept in mind when bodies are moving freely under gravity?
60. What do you know about uniform velocity?
61. What do you mean by the graph, variables, independent quantity and dependent quantity?
62. What do you mean by the speed-time graph?
63. What is LIDAR GUN?
64. What is meant by positive acceleration and negative acceleration?
65. What is meant by the acceleration?
66. What is Position?
67. What is terminal velocity?
68. What is the difference between speed and velocity?
69. What is the purpose of the distance-time graph? How it is plotted?
70. What would be the shape of a speed-time graph for distance travel by a moving object?
71. What would be the shape of a speed-time graph of a body moving with constant speed?
72. What would be the shape of a speed-time graph of a body moving with uniformly changing speed?
73. What would be the shape of a speed-time graph of a body moving with variable speed?
74. When a body is said to be at rest?
75. When a body is thrown vertically upward, its velocity at the highest point is zero. Why?
76. When does a body possess acceleration?
77. Which equation of motion establishes the relationship between S, a, Vi and Vf?
78. Which equation of motion establishes the relationship between vf, vi, a and t, drive relation between these quantities.
79. Which is the fastest animal on the Earth?
80. Which of the following can be obtained from the speed-time graph of a body? (i) Initial speed (ii) Final speed (iii) Distance covered in time t (iv) Acceleration of motion
81. Why a body moving along a circle with uniform speed has variable velocity?
82. Why vector quantities cannot be added and subtracted like scalar quantities?
83. Write about different types of motion.
84. Write equations of motion for bodies moving under gravity?
85. Write formulae to find area rectangle, triangle and trapezium.
Long Questions
1. Define the terms Speed, velocity and acceleration with examples
2. Sketch a velocity-time graph for the motion of the body. From the graph explaining each step, calculate total distance covered by the body.
3. Derive equations of motion for uniformly accelerated rectilinear motion.
4. Describe the different types of translatory motion?
5. Sketch a distance-time graph for a body at rest. How will you determine the speed of a body from this graph?
6. Sketch a distance-time graph for a body moving with variable speed?
7. Sketch a speed-time graph for distance travel by a moving object?
8. Sketch a speed-time graph for a body moving with uniformly changing speed?
9. Prove that vf = vi + at.
10. Derive the equation of motion which is independent of distance S.
11. Derive the second equation of motion for uniformly accelerated rectilinear motion.
12. Derive the equation of motion which is independent of t.
13. Derive the second equation of motion?
14. Prove that S = Vit + ½ at²
15. Derive the third equation of motion for uniformly accelerated rectilinear motion.
16. Derive the equation of motion which is independent of t.
17. Derive the third equation of motion?
18. Prove that 2aS = vf² – vi²
19. A train moves with a uniform velocity of 36 kmh⁻¹ for 10 s. Find the distance travelled by it.
20. A train starts from rest. It moves through 1 km in 100 s with uniform acceleration. What will be its speed at the end of 100 s.?
21. A car has a velocity of 10 ms⁻¹. It accelerates at 0.2 ms⁻² for half minute. Find the distance travelled during this time and the final velocity of the car.
22. A tennis ball is hit vertically upward with a velocity of 30 ms⁻¹, it takes 3 s to reach the highest point. Calculate the maximum height reached by the ball. How long it will take to return to the ground?
23. A car moves with a uniform velocity of 40 ms⁻¹ for 5 s. It comes to rest in the next 10 s with uniform deceleration. Find deceleration and total distance travelled by car.
24. A train starts from rest with an acceleration of 0.5 ms⁻². Find its speed in kmh⁻¹, when it has moved through 100 m.
25. A train starting from rest, accelerates uniformly and attains a velocity of 48 kmh⁻¹ in 2 minutes. It travels at this speed for 5 minutes. Finally, it moves with uniform retardation and is stopped after 3 minutes. Find the total distance travelled by train.
26. A cricket ball is hit vertically upwards and returns to ground 6 s later. Calculate (i) Maximum height reached by the ball (ii) initial velocity of the ball
27. When brakes are applied, the speed of a train decreases from 96 kmh⁻¹ to 48 kmh⁻¹ in 800 m. How much further will the train move before coming to rest? (Assuming the retardation to be constant). Find the time taken by the train to stop after the application of brakes.
28. Define Translatory motion and its types.
29. Explain Distance — time Graph.
30. Explain Speed — Time Graph.
31. Derive first equation of motion using speed time graph.
32. Derive second equation of motion using speed-time graph.
33. Derive third equation of motion using speed-time graph.