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A stone is dropped from the …

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A stone is dropped from the top of the tower 720m high into a pond of water at the base of the tower .when the splash is heard at the top.

Posted by Anshika Sharma 8 months, 4 weeks ago

CBSE > Class 09 > Science

2 answers

Lokesh Kumar 8 months, 2 weeks ago

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Anirudh Sharma 8 months, 3 weeks ago

S = 720 U= 0 A= 9.8 S= 1/2 AT SQUARE + UT 720 = 1/2× 9.8 T SQUARE TIME SQUARE = 720× 2/9.8 TIME = 60 UNDERROOT 2 2ND PART SPPED OF SOUND = 344 TIME = DISTANCE / TIME T = 720 / 344 Time = 2. 09 Total time = first time + second time = 86 .94

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