Question

3. A stone is dropped from the top of a tower 125 m high into a pond of water at th
base of the tower. When is splash heard at the top.
(g = 10 ms and speed of sound = 340 ms']
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Answer 1

Answer:

This question has to be solved in two parts first time taken by stone to reach the surface of water in pond and the time taken by the sound waves to reach the height after being produced

so

s=ut +1/2gt1^2

-125=1/2 x -10 x t1^2

125=5t1^2

t1^2=25 t=5

now time taken by sound waves to come to height

s=vt

125=342 x t2

t2=.36 sec

so

t1 + t2 = 5.36

tanks u batao kaisa laga