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A stone dropped from the top of a tower of height 300m splashes into the water of a pond near the base of the tower. When is the splash heard at the top given that the speed of sound in air is `340ms^(-1)` ? `(g= 9.8ms^(-2))`

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A stone dropped from the top of a tower of height 300 m high splashes into the water of a pong near the base of the tower. When is the splash heard at the top ? Given that the speed of sound in air is 340ms^(-1)? (g=9.8ms^(-2)) .

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