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A helicopter is ascending vertically wit...

A helicopter is ascending vertically with a speed of `8.0 "ms"^(-1)`. At a height of 12 m above the earth, a package is dropped from a window. How much time does it take for the package to reach the ground ?

A

1.23s

B

3.23s

C

5.83s

D

2.53s

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-MOTION IN A STRAIGHT LINE-Exercise -2
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  2. A body is projected up with velocity u. It reaches a point in its path...

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  3. A stone thrown vertically up with velocity reaches three points A, B a...

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

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  5. A stone is thrown vertically from the ground. It reaches the maximum h...

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  6. How long does it take a brick to reach the ground if dropped from a he...

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  7. A stone is dropped from top of a tower 300m high and at the same time ...

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  8. An object reaches a maximum vertical height of 23.0 m when thrown vert...

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  9. A stone is thrown vertically upward with a speed of 10.0 "ms"^(-1) fr...

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  10. A helicopter is ascending vertically with a speed of 8.0 "ms"^(-1). At...

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  11. A ball is thrown stright upwards with a speed v from a point h meters ...

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  12. An elevator is going up. The variation in the velocity of the elevator...

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  13. The displacement time graphs of two moving particles make angles of 30...

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  14. For the displacement-time graph shown in figure, the ratio of the magn...

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  15. The displacement-time graph of a moving object is shown in figure. Whi...

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  16. A ball is dropped vertically, from a height h above the ground. It hit...

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  17. Which of the following curves does not represent motion in one dimensi...

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  18. Two cars P and Q start from a point at the same time in a straight lin...

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  19. The displacement of a particle moving along the x-axis is given by equ...

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  20. A Wheel of circumference C is at rest on the ground.When the wheel rol...

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