Motion | NCERT (CBSE) Class IX Science (Physics) | Multiple Choice Questions (MCQ)


Class 9, Ncert Cbse Science (Physics) 
Chapter - 8, Motion 
Multiple Choice Questions (MCQ)
Q.1: m/s2 is the SI unit of -
(a) distance
(b) displacement
(c) velocity
(d) acceleration.
Q.2: A car goes from a town A to another town B with a speed of 40 km/h and returns back to the town A with a speed of 60 km/h. The average speed of the car during the complete journey is -
(a) 48 km/h
(b) 50 km/h
(c) zero
(d) none of these.
Q.3: The rate of change of displacement with time is called -
(a) speed
(b) velocity
(c) acceleration
(d) retardation
Q.4: The initial velocity of a body is u. It is under uniform acceleration a. Its velocity v at any time t is given by -   
(a) v = u + at2
(b) v = u + ½ at2
(c) v = u + at
(d) v = u.
Q.5: The distance covered in time t by a body having initial velocity u and having a uniform acceleration a is given by  s = ut + ½ at2. This result follows from -
(a) Newton’s first law
(b) Newton’s second law
(c) Newton’s third law
(d) None of these.
Q.6: A ball is thrown vertically upwards. It rises to a height of 50 m and comes back to the thrower,  
(a) the total distance covered by the ball is zero.
(b) the net displacement of the ball is zero.
(c) the displacement is 100 m.
(d) none of these.
Q.7: In 12 minutes a car whose speed is 35 km/h travels a distance of  
(a) 7 km
(b) 3.5 km
(c) 14 km
(d) 28 km
Q.8: When a graph of one quantity versus another results in a straight line, the quantities are
(a) both constant
(b) equal
(c) directly proportional
(d) inversely proportional
Q.9: A body moving along a straight line at 20 m/s undergoes an acceleration of -4 m/s2. After two seconds its speed will be -
(a) -8 m/s
(b) 12 m/s
(c) 16 m/s
(d) 28 m/s.
Q.10: A car increases its speed from 20 km/h to 30 km/h in 10 seconds. Its acceleration is  
(a) 30 m/s2
(b) 3 m/s2
(c) 18 m/s2
(d) 0.83 m/s2
Q.11: A body whose speed is constant
(a) must be accelerated
(b) might be accelerated
(c) has a constant velocity
(d) can not be accelerated.
Q.12: When the distance that an object travels is directly proportional to the length of time it is said to travel with
(a) zero velocity
(b) constant speed
(c) constant acceleration
(d) uniform velocity
Q.13: a particle moves with uniform positive acceleration. Its velocity-time graph will be  
(a) a straight line parallel to the time axis
(b) a straight line inclined at an obtuse angle to the time axis
(c) a straight line inclined at an acute angle to the time axis
(d) none of these.
Q.14: The slope of speed-time graph gives
(a) speed
(b) velocity
(c) acceleration
(d) momentum
Q.15: A particle experiences constant acceleration for 20 seconds after starting from rest. If it travels a distance s­1 in the first 10 seconds and distance s2 in the next 10 seconds then,  
(a) s2 = s1
(b) s2 = 2s1
(c) s2 = 3s1
(d) s2 = 4s1
Q.16: In which of the following cases the object does not possess an acceleration or retardation when it moves in
(a) upward direction with decreasing speed
(b) downward direction with increasing speed
(c) with constant speed along circular path
(d) with constant speed along horizontal path
Q.17: A person travels distance πR along the circumference of a circle of radius R. Displacement of the person is
(a) R
(b) 2R
(c) 2πR
(d) zero
Q.18: The velocity of an object is directly proportional to the time elapsed. The object has  
(a) uniform speed
(b) uniform velocity
(c) uniform acceleration
(d) variable acceleration

Answers: 1 - d. 2 - a. 3 - b. 4 - c. 5 - d. 6 - b. 7 - a. 8 - c. 9 - b. 10 - d. 11 - b. 12 - b 13 - c. 14 - c. 15 - c. 16 - d. 17 - b. 18 - c. 

MOTION - further study   

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  1. i couldn't find answers....:(

    1. I also couldn't find the answer

    2. I also couldn't find the answer

    3. All answers are at the end just below Question No 18.

  2. i want in text questions answers of chapter 8 motion

  3. i dont like science but in physics everytime i got full mark how it is possible

    1. Because you are great in science that's
      why you got full Marks. Very nice

    2. Umm... no offence but it would be better if u improve in english. N offence,ok?

    3. Yeah exactly it should be I get instead of got...

  4. It is really very nice questions. I really like it. I think that you should have only a very nice brain

  5. 1. (a) 14th July, 1789
    2. (b) Despotic power of the king
    3. (c) Three Estates
    4. (d) Clergy and nobility
    5. (d) Exemption from taxes to the state
    6. (a) Middle class
    7. (c) Philosophers such as John Locke and Rousseau
    8. (a) John Locke
    9. (c) Rousseau
    10. (b) 'The Spirit of the Laws'
    11. (b) Louis XVI
    12. (d) Estates General
    13. (d) Estates General
    14. (b) 1614
    15. (a) Indoor Tennis Court
    16. (c) Mirabeau and Abbe Sieyes
    17. (d) Establish a constitutional monarchy
    18. (d) Act of becoming free
    19. (c) Personification of Law
    20. (d) Strength lies in unity
    21. (d) Snake biting its tail to form a ring
    22. (c) Blue-white-red
    23. (d) Marseilles
    24. (d) San-culottes
    25. (d) Republic
    26. (c) Political instability of the Directory
    27. (d) Liberty, Freedom and Equality
    28. (c) Roget de L’Isle
    29. (a) Liberty
    30. (c) Estates General
    31. (a) Beheading a person
    32. (a) July 14, 1789
    33. (b) Treason
    34. (a) The Church
    35. (c) Increase in population led to rapid increase in the demand of food grains
    36. (a) It stood for the despotic power of the king

  6. I easily find all the questions

  7. all are written in the last of question number 18

  8. Yeh app tatti hai. Didn't foin ansers

  9. By-Ronit gupta
    few questions have wrong answers.

    1. All answers are correct.
      Thanks for writing !!

  10. This comment has been removed by a blog administrator.


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      We don't allow this.

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      it is available in HELL, go there

  12. Mam hume yeah copy m karna u