CBSE  /  Class 9  /  Science  /  Motion

  • 1. 
    A particle is moving in a circular path of radius r. The displacement after half a circle would be:

  • Zero
  • πr
  • 2r
  • 2πr

  • 2. 
    A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is,

  • ulg
  • ul2g
  • ulg
  • ul2g

  • 3. 
    The numerical ratio of displacement to distance for a moving object is

  • always less than 1
  • always equal to 1
  • always more than 1
  • equal or less than 1

  • 4. 
    If the displacement of an object is proportional to square of time, then the object moves with

  • uniform velocity
  • uniform acceleration
  • increasing acceleration
  • decreasing acceleration

  • 5. 
    From the given υ – t graph, it can be inferred that the object is

  • in uniform motion
  • at rest
  • in non-uniform motion
  • moving with uniform acceleration

  • 6. 
    Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed of 10 ms

  • at rest
  • moving with no acceleration
  • in accelerated motion
  • moving with uniform velocity

  • 7. 
    Area under a υ -1 graph represents a physical quantity which has the unit

  • m2
  • m
  • m3
  • ms-1

  • 8. 
    Four cars A, B, C and D are moving on a levelled road. Their distance versus time graphs are shown in the adjacent figure. Choose the correct statement.

  • Car A is faster than car D.
  • Car B is the slowest.
  • Car D is faster than car C.
  • Car C is the slowest.

  • 9. 
    Slope of a velocity-time graph gives

  • the distance
  • the displacement
  • the acceleration
  • the speed

  • 10. 
    In which of the following cases of motions, the distance moved and the magnitude of displacement are equal?

  • If the car is moving on a straight road
  • If the car is moving in Circular path
  • The pendulum is moving to and fro
  • The earth is revolving around the sun.
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