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A boy releases a hall from the top of a ...

A boy releases a hall from the top of a building. It will clear a window 2 m high at a distance 10 m below the top in nearly :

A

1 s

B

1.3 s

C

0.6 s

D

0.13 s.

Text Solution

Verified by Experts

The correct Answer is:
d
Here
`/_\=((2xx12)/(10))^(1//2) -((2xx10)/(10))^(1//2) =0.135 sec`.
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MODERN PUBLICATION-DESCRIPTION OF MOTION IN ONE DIMENSION -MULTIPLE CHOICE QUESTION (LEVEL-II)
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  7. A balloonist release a ballast bag from a balloon rising at 40 ms at a...

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  8. Two bodies begin a free fall from the same height at a time interval o...

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  9. A boy releases a hall from the top of a building. It will clear a wind...

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  10. Two balls are projected simultaneously with the same speed from the to...

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  11. A particle travels half the distance with a velocity of 6 ms. The rema...

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  12. A body starts from a point with a velocity and uniform acceleration a....

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  13. The greatest acceleration or deceleration that a train may have is a. ...

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  14. If the velocity of a car in increased by 20%, then the minimum distanc...

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  15. The acceleration of a particle increasing linearly with timer is be. T...

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  16. A ball is dropped vertically from a height above the ground. It hits t...

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  17. A ball is released from the top of a tower of heighth metre. It takes ...

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  18. A particle stars from rest. Its acceleration (a) versus time (t) is as...

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  19. The velocity of particle is v=v0 +gt+ft^(2) if its position is x =0 at...

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  20. An object moving with a speed of 6.25 m/s , is decelerated at a rate g...

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