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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

1.23 s

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 -II
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  5. A ball is dropped from a building of height 45 m. Simultaneously anoth...

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

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

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

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

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

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

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

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

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  14. The velocity - time graph of a body is shown in fig. The ratio of the ...

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  15. A body projected from the ground reaches a point 'X' in its path after...

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  16. A body is falling freely from a point A at certain height from the gro...

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  17. An object is thrown vertically upward with a speed of 30 m/s. The velo...

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  18. A stone is dropped from the top of a tower of height h=60m. Simultaneo...

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  19. The velocity and time graph for a particle moving in a straight line s...

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  20. The velocity-time graphs of a car and a scooter are shown in the figur...

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