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A stone is dropped from the top of a tow...

A stone is dropped from the top of a tower 500 m high into a pond of water at the base of the tower. When is the splash heard at the top ? Given g = 10 m `s^(-2)` and speed of sound `= 340 m s^(-1)` .

Text Solution

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(a) Distance = 500 m
u = 0 , a = `10 m//s^(2)`
`s=ut +1/2 "gt"^(2)`
`500=(0xxt)+1/2xx10xxt^(2)`
`t = 10 sec`
(b) Speed `=340m//s`
`500=500/340=11.47` sec
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