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A lift is freely falling from 8th floor ...

A lift is freely falling from 8th floor and is just about to stop at 4th floor. Taking ground floor as origin and positive direction upwards for displacement, velocity, acceleration. Which one of the following is correct?

A

`x lt 0 , v lt 0 , a gt 0`

B

`x gt 0 , v lt 0 , a lt 0`

C

`x gt 0, v lt 0 , a gt 0`

D

`x gt 0, v gt 0 , a lt 0`

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The correct Answer is:
A
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AAKASH SERIES-MOTION IN A STRAIGHT LINE -EXERCISE -I
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  2. A person travelling on a straight line moves with a uniform velocity v...

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  3. A lift is freely falling from 8th floor and is just about to stop at 4...

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  4. Which of following statements is incorrect?

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  5. (A) : A body can have acceleration even if its velocity is zero at a g...

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  6. The displacement of a particle starts from rest is proportional to the...

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  7. (Assertion) :A body may be accelerated even when it is moving at unifo...

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  8. What determines the nature of the path followed by the particle

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  9. The position-time (x -t) graphs for two children A and B returning fro...

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  10. At time t = 0, two bodies A and B are at the same point. A moves with ...

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  11. Two bodies of different masses are dropped similtaneously from the top...

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  12. At a metro station, a girl walks up a stationary escalator in time t1....

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  13. Two bodies of different masses are dropped similtaneously from the top...

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  14. The acceleration of a moving body can be found from

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  15. A body falls freely from a height 'h' its average velocity when it rea...

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  16. For a moving body at any instant of time

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  17. A body falls freely from a height 'h' after two seconds if accelaratio...

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  18. A body falls freely from a height 'h' after two seconds if we assume t...

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  19. In the case of a body freely falling from small height

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  20. A hydrogen balloon released on the moon from a height will

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