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A packet is dropped from a balloon risin...

A packet is dropped from a balloon rising up with uniform velocity `9.8 "ms"^(-1)`. If the balloon is at a height of 39.2 m from the ground at the time of dropping the stone, the stone reaches the ground after

A

2 s

B

6s

C

4 s

D

8s

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-MOTION IN A STRAIGHT LINE -PRACTICE EXERCISE
  1. A body is projected vertically up with a velocity of 58.8 m/s. After 3...

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  2. The distance travelled by a body during last second of its upward jour...

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  3. A packet is dropped from a balloon rising up with uniform velocity 9.8...

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  4. A body is projected vertically upwards with a velocity 'U'. It crosses...

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  5. A boy throws a ball in air in such a manner that when the ball is at i...

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  6. A stone is dropped freely while another thrown vertically downward wit...

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  7. A body thrown up with a velocity reaches a maximum height of 50 m. Ano...

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  8. A person in a lift which descends down with an acceleration of 1.8 m//...

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  9. A body projected up with a velocity of 39.2 m/s reaches a point in its...

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  10. The velocity of a body moving vertically up is 49 ms^(-1) at half the...

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  11. A stone projected vertically up with velocity v from the top of a towe...

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  12. A body is thrown vertically up reaches a maximum height of 78.4 m. Aft...

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  13. A stone dropped from a cliff hits the ground in 4 sec. Height of the c...

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  14. A stone is dropped from a tower of height 200 m and at the same time a...

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  15. A stone is thrown vertically up at 20 m/s from a tower 80 m height. Th...

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  16. A vertically thrown up body reaches 20m at a place on the earth. The h...

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  17. A balloon rises with uniform velocity of 10 ms^(-1). When the balloon ...

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  18. The variation of velocity of a particle moving along a straight line i...

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  19. In the graph shown the displacement of the body in 5 seconds will be

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  20. Figure shows the acceleration time graph of a particle. Which of the f...

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