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A stone is dropped from top of a cliff ....

A stone is dropped from top of a cliff . It is seen to hit the ground below after `4.2s` how high is the cliff?

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The correct Answer is:
`86.44m`
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AAKASH SERIES-MOTION IN A STRAIGHT LINE-EXERCISE (LEVEL 1)
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  11. A stone is dropped from top of a cliff . It is seen to hit the ground ...

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  12. If an object reaches a maximum vertical height of 23.0 m when thrown v...

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  13. A stone is thrown vertically upward with a speed of 10.0ms^(-1)from th...

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  14. A ball is dropped freely from rest. If it travels a distance 55m in th...

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  15. An object that is dropped freely from rest travels for 5 seconds. What...

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  16. A ball is vertically projected with an initial velocity of 40ms^(-1) ....

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  17. An object is vertically projected with an initial velocity of 20ms^(-...

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  18. A stone is thrown vertically upward with an initial velocity of 10ms^(...

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