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A boy whirls a stone in a horizontal cir...

A boy whirls a stone in a horizontal circle 2 m above the ground by mean of a string 1.25 m long .The string breaks nd the stone flies off horizontally,striking the ground 10 m away.What is the magnitude of the centripetal acceleration during circular motion ?Take `g= 10 ms^-2`.

A

`1000 ms^-2`

B

`200 ms^-2`

C

`300 ms^-2`

D

`400 ms^-2`.

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