Force and Motion Model Question Paper

7th Standard

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Science

Time : 01:30:00 Hrs
Total Marks : 50
    3 x 1 = 3
  1. A particle is moving in a circular path of radius r. The displacement after half a circle would be _______.

    (a)

    Zero

    (b)

    R

    (c)

    2 r

    (d)

    r / 2

  2. Distance travelled by a body in a given time

    (a)

    is always positive

    (b)

    can be zero or positive

    (c)

    is always negative

    (d)

    either (a) or (c)

  3. The slope of a velocity-time graph gives _______

    (a)

    velocity

    (b)

    distance

    (c)

    displacement

    (d)

    acceleration

  4. 5 x 1 = 5
  5. The shortest distance between two places is_______.

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    displacement

  6. If the velocity of an object increases with respect to time, then the object is said to be in_______ acceleration.

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    positive

  7. In _______ equilibrium its centre of gravity remains at the same height when it is displaced.

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    neutral

  8. The SI unit of displacement is _____________

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    metre (m)

  9. Distance is a ___________ quantity.

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    scalar

  10. 5 x 1 = 5
  11. Displacement

  12. (1)

    Knot

  13. Speed of ship

  14. (2)

    Not possible.

  15. Stability

  16. (3)

    Larger base area

  17. Uniform motion.

  18. (4)

    Equal distances covered in equal intervals of time

  19. The velocity-time graph is a circle

  20. (5)

    Metre

    1 x 5 = 5
  21. A car started from rest and travelling with velocity of 20 m /s in 10 s. What is its acceleration?

  22. 5 x 2 = 10
  23. All objects having uniform speed need not have uniform velocity. Describe with the help of examples.

  24. Give one example where the displacement is zero but the distance travelled is not zero

  25. Give some examples for vector quantity

  26. Give one example for uniform acceleration

  27. What are three types of stability of an object?

  28. 4 x 3 = 12
  29. Distinguish between speed and velocity.

  30. What is centre of gravity ?

  31. Define speed Mention its formula and unit.

  32. What is stability? Mention its types.

  33. 2 x 5 = 10
  34. Explain the types of stability with suitable examples.

  35. Write the differences between distance and displacement

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