CBSE  /  Class 11  /  Physics  /  Motion in a Straight Line

  • 1. 
    A boy starts from a point A, travels to a point B at a distance of 1.5 km and returns to A. If he takes one hour to do so, his average velocity is

  • 3 km/h
  • zero
  • 1.5 km/h
  • 2 km/h

  • 2. 
    A body starts from rest. If it travels with an acceleration of 2 m/s², its displacement at the end of 3 seconds is

  • 9 m
  • 12 m
  • 16 m
  • 10 m

  • 3. 
    A body starts from rest and travels with uniform acceleration of 2 m/s². If its velocity is v after making a displacement of 9 m, then v is

  • 8 m/s
  • 6 m/s
  • 10 m/s
  • 4 m/s

  • 4. 
    A body starts from rest and travels with an acceleration of 2 m/s². After t seconds its velocity is 10 m/s. Then t is

  • 10 s
  • 5 s
  • 20 s
  • 6 s

  • 5. 
    A body starts from rest and travels for five seconds to make a displacement of 25 m if it has travelled the distance with uniform acceleration a then a is

  • 3 m/s²
  • 4 m/s²
  • 2 m/s²
  • 1 m/s²

  • 6. 
    A boy moves on a circular distance of radius R. Starting from a point A he moves to a point B which is on the other end of the diameter AB. The ratio of the distance travelled to the displacement made by him is

  • ∏/2
  • ∏
  • 2∏
  • 4∏

  • 7. 
    The dimensional formula for acceleration is

  • [LT2]
  • [LT?2]
  • [L2T]
  • [L2T2]

  • 8. 
    A body starts from rest and travels with uniform acceleration a to make a displacement of 6 m. If its velocity after making the displacement is 6 m/s, then its uniform acceleration a is

  • 6 m/s²
  • 2 m/s²
  • 3 m/s²
  • 4 m/s²

  • 9. 
    Which one of the following is the unit of velocity?

  • kilogram
  • metre
  • m/s
  • second

  • 10. 
    The displacement in metres of a body varies with time t in second as y = t2 – t – 2. The displacement is zero for a positive of t equal to

  • 1 s
  • 2 s
  • 3 s
  • 4 s
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