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Can a body have a. Zero instantaneous ...

Can a body have
a. Zero instantaneous velocity and yet be accelerating?
b. Zero average speed but non-zero average velocity?
c. Negative acceleration and yet be speeding up?
d. Magnitude of average velocity be equal to average speed ?

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SL ARORA-MECHANICS-Exercise
  1. Explain how can a body be simultaneously at rest and in motion?

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  2. If the origin is shifted to the point (0,-2) by a translation of the a...

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  3. Can a body have a. Zero instantaneous velocity and yet be accelerati...

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  4. Assertion: The average velocity of a particle is zero in a time interv...

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  5. If the displacement of a particle is zero, then distance covered by it

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  6. In Ques.8, the direction of acceleration is

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  7. Does the acceleration produced in a freely falling body depend on the ...

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  8. Two balls of different masses are thrown vertically upwards with the s...

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  9. In a case of a motion, displacement is directly proportional to the sq...

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  10. The displacement of a body is proporticonal to the cube of time elapse...

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  11. True/False type quesiton : The ratio of the distances covered by a bod...

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  12. Assertion: A body,whatever its motion, is always at rest in a frame of...

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  13. Explain that a particle can have zero average velcoity but not zero av...

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  14. Assertion: A body having non zero acceleration can have a constant vel...

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