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A stone dropped from a cliff hits the gr...

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

A

39.2 m

B

29.4 m

C

9.8 m

D

78.4 m

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Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-MOTION IN A STRAIGHT LINE -PRACTICE EXERCISE
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  3. A body is projected vertically upwards with a velocity 'U'. It crosses...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  20. A man in a car at location Q on a straight highway is moving with spee...

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