estimate the height of water well martha and chandrapur heavy rock into dual 8 seconds after the rock is dropped the hurt a splash caused by impact of the rock on the water speed of sound in air is 340 ms what is the height of the well
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Answer:
Correct option is
B
19.6 m
Time taken by the stone to reach the water surface
t
1
=
g
2h
, where h is the height of the well.
Time taken by the sound to reach the observer
t
2
=
350
h
Total time
t=t
1
+t
2
=
g
2h
+
350
h
=
4.9
h
+
350
h
=2.056
Solving the above Eqn. we get
h=19.6 m
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